Phoenix, Arizona Weather Conditions

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Current Conditions

  • 99°
  • Mostly Cloudy
  • Wind: NNE 5 mph
  • Humidity: 25%
  • Visibility: 10.0 miles
  • Dew Point: 57°
  • Pressure: 29.74 in. +
  • Heat Index: 98

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Click a section below for more information.

Next 12 Hours

11  pm
2  am
5  am
8  am
11  am
Chance of a Thunderstorm
Chance of T-storms
Chance of a Thunderstorm
Chance of T-storms
Chance of a Thunderstorm
Chance of T-storms
Chance of a Thunderstorm
Chance of T-storms
Chance of a Thunderstorm
Chance of T-storms
90°
84°
86°
84°
90°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Tuesday
  • Chance of a Thunderstorm
  • High: 97 °
  • Low: 81 °
  • Chance of T-Storms
  • Wednesday
  • Thunderstorm
  • High: 95 °
  • Low: 77 °
  • T-Storms
  • Thursday
  • Thunderstorm
  • High: 90 °
  • Low: 81 °
  • T-Storms
  • Friday
  • Chance of a Thunderstorm
  • High: 91 °
  • Low: 81 °
  • Chance of a Thunderstorm
  • Saturday
  • Chance of a Thunderstorm
  • High: 97 °
  • Low: 79 °
  • Chance of a Thunderstorm

Forecast for Phoenix, Arizona

Updated: 8:00 PM MST on September 15, 2014

Flash Flood Watch in effect from 11 am Wednesday to 6 PM MST Thursday...
  • Monday

    Clear in the morning, then partly cloudy with a chance of a thunderstorm and a chance of rain. High of 102F. Winds from the South at 5 to 10 mph. Chance of rain 20%.

  • Monday Night

    Partly cloudy with a chance of a thunderstorm and a chance of rain. Low of 81F with a heat index of 90F. Winds less than 5 mph. Chance of rain 20%.

  • Tuesday

    Mostly cloudy with a chance of a thunderstorm and a chance of rain. High of 97F. Winds less than 5 mph. Chance of rain 30%.

  • Tuesday Night

    Overcast with a chance of a thunderstorm and a chance of rain in the evening, then partly cloudy with a chance of a thunderstorm and a chance of rain. Low of 81F with a heat index of 93F. Winds from the WSW at 5 to 15 mph. Chance of rain 50% with rainfall amounts near 0.2 in. possible.

  • Wednesday

    Partly cloudy with thunderstorms, then thunderstorms and rain showers in the afternoon. High of 95F. Winds less than 5 mph. Chance of rain 60% with rainfall amounts near 0.3 in. possible.

  • Wednesday Night

    Mostly cloudy with thunderstorms and rain showers. Low of 77F. Winds less than 5 mph. Chance of rain 60% with rainfall amounts near 0.4 in. possible.

  • Thursday

    Partly cloudy with thunderstorms and rain showers. High of 90F. Winds less than 5 mph. Chance of rain 60%.

  • Thursday Night

    Partly cloudy in the evening, then clear with a chance of a thunderstorm and rain. Low of 81F with a heat index of 88F. Winds from the SSW at 5 to 15 mph. Chance of rain 50%.

  • Friday

    Partly cloudy with a chance of rain. High of 91F. Winds less than 5 mph. Chance of rain 20%.

  • Friday Night

    Clear with a chance of a thunderstorm and rain. Low of 81F with a heat index of 88F. Winds less than 5 mph. Chance of rain 50%.

  • Saturday

    Partly cloudy with a chance of a thunderstorm and rain. High of 97F. Winds less than 5 mph. Chance of rain 20%.

  • Saturday Night

    Clear with a chance of a thunderstorm. Low of 79F. Winds less than 5 mph. Chance of rain 40%.

  • Sunday

    Partly cloudy with a chance of a thunderstorm. High of 95F. Winds less than 5 mph. Chance of rain 20%.

  • Sunday Night

    Partly cloudy with a chance of a thunderstorm. Low of 79F. Winds from the NNE at 5 to 10 mph. Chance of rain 50%.

  • Monday

    Clear with a chance of a thunderstorm. High of 93F. Winds less than 5 mph. Chance of rain 20%.

  • Monday Night

    Clear. Low of 81F. Winds less than 5 mph.

  • Tuesday

    Clear. High of 93F. Winds less than 5 mph.

  • Tuesday Night

    Clear. Low of 77F. Winds less than 5 mph.

  • Wednesday

    Clear. High of 99F. Winds less than 5 mph.

  • Wednesday Night

    Clear. Low of 77F. Winds less than 5 mph.

  • Thursday

    Clear. High of 97F. Winds less than 5 mph.

  • Thursday Night

    Clear. Low of 75F. Winds less than 5 mph.

  • Friday

    Clear. High of 97F. Winds less than 5 mph.

Severe Weather Alert Descriptions

 Flash Flood Watch  Statement as of 2:47 PM MST on September 15, 2014


... Flash Flood Watch in effect from Wednesday morning through
Thursday afternoon...

The National Weather Service in Phoenix has issued a

* Flash Flood Watch for portions of east-central Arizona... south-
central Arizona and west-central Arizona... including the following
areas... in east-central Arizona... southern Gila County/Tonto
National Forest foothills. In south-central Arizona... greater
Phoenix area... northwest Maricopa County... northwest and north
central Pinal County and southwest Maricopa County. In west-
central Arizona... west central deserts.

* From Wednesday morning through Thursday afternoon

* showers and thunderstorms will increase in coverage Wednesday and
Thursday. Some storms will produce very heavy rainfall... which will
exacerbate already saturated soils and lead to flooding of urban areas
and normally dry washes.

Precautionary/preparedness actions...

A Flash Flood Watch means that flooding of washes... creeks and other
drainage areas is possible within the watch area. If you are in the
watch area... you should watch the weather and be prepared to take
immediate action should heavy rain and flooding occur or a Flash
Flood Warning be issued.


Stay up-to-date on the latest forecasts by listening to weather radio
on the public service band. More detailed information is available
from the National Weather Service in Phoenix on the internet at

Weather.Gov/Phoenix


Hirsch




Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Cheery Lynn Historical District, Phoenix, AZ

Updated: 9:53 PM MST

Temperature: 90.0 °F Dew Point: 67 °F Humidity: 47% Wind: Calm Pressure: 29.82 in Hourly Precipitation: 0.00 in Heat Index: 93 °F Graphs

Location: Phoenix S of Christown, Phoenix, AZ

Updated: 9:52 PM MST

Temperature: 88.5 °F Dew Point: 62 °F Humidity: 41% Wind: SSW at 2.0 mph Pressure: 29.73 in Hourly Precipitation: 0.00 in Heat Index: 89 °F Graphs

Location: North Central Phoenix, Phoenix, AZ

Updated: 9:52 PM MST

Temperature: 86.9 °F Dew Point: 64 °F Humidity: 47% Wind: Calm Pressure: 29.69 in Hourly Precipitation: 0.00 in Heat Index: 88 °F Graphs

Location: Phoenix, Phoenix, AZ

Updated: 9:48 PM MST

Temperature: 92.5 °F Dew Point: 62 °F Humidity: 36% Wind: Calm Pressure: 29.71 in Hourly Precipitation: 0.00 in Heat Index: 93 °F Graphs

Location: South Phoenix/Laveen, Phoenix, AZ

Updated: 9:50 PM MST

Temperature: 90.3 °F Dew Point: 65 °F Humidity: 43% Wind: Calm Pressure: 29.78 in Hourly Precipitation: 0.00 in Heat Index: 92 °F Graphs

Location: Werner Ent. Phoenix, Phoenix, AZ

Updated: 9:52 PM MST

Temperature: 92.5 °F Dew Point: 58 °F Humidity: 32% Wind: NNW at 3.0 mph Pressure: 29.72 in Hourly Precipitation: 0.00 in Heat Index: 92 °F Graphs

Location: Dateland Palms, Phoenix, AZ

Updated: 9:52 PM MST

Temperature: 91.4 °F Dew Point: 62 °F Humidity: 38% Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Heat Index: 92 °F Graphs

Location: South Mountain, East, Phoenix, AZ

Updated: 9:48 PM MST

Temperature: 92.5 °F Dew Point: 63 °F Humidity: 38% Wind: West at 5.8 mph Pressure: 29.84 in Hourly Precipitation: - Heat Index: 94 °F Graphs

Location: AZCC, Phoenix, AZ

Updated: 9:53 PM MST

Temperature: 86.0 °F Dew Point: 67 °F Humidity: 53% Wind: Calm Pressure: 29.74 in Hourly Precipitation: 0.00 in Heat Index: 89 °F Graphs

Location: Ingleside Track, Phoenix, AZ

Updated: 9:53 PM MST

Temperature: 86.2 °F Dew Point: 69 °F Humidity: 56% Wind: Calm Pressure: 29.74 in Hourly Precipitation: 0.00 in Heat Index: 90 °F Graphs

Location: Spur Circle, Scottsdale, AZ

Updated: 9:52 PM MST

Temperature: 92.8 °F Dew Point: 63 °F Humidity: 37% Wind: Calm Pressure: 29.81 in Hourly Precipitation: - Heat Index: 94 °F Graphs

Location: Down to Earth Enterprises, Tempe, AZ

Updated: 9:50 PM MST

Temperature: 92.8 °F Dew Point: 65 °F Humidity: 41% Wind: NNW at 2.0 mph Pressure: 29.69 in Hourly Precipitation: 0.00 in Heat Index: 96 °F Graphs

Location: Northern Palms, Phoenix, AZ

Updated: 9:52 PM MST

Temperature: 90.1 °F Dew Point: 61 °F Humidity: 38% Wind: Calm Pressure: 29.65 in Hourly Precipitation: 0.00 in Heat Index: 90 °F Graphs

Location: Scottsdale - Old Town, Scottsdale, AZ

Updated: 9:48 PM MST

Temperature: 89.1 °F Dew Point: 62 °F Humidity: 40% Wind: Calm Pressure: 29.79 in Hourly Precipitation: - Heat Index: 89 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service Phoenix Arizona 
915 PM MST Monday Sep 15 2014 


Synopsis... 
isolated showers and thunderstorms will continue to develop over 
parts of the area tonight in association with the outer bands of 
tropical system Odile. Moisture will increase substantially by 
Tuesday morning...and there will be an elevated risk of heavy rain 
and flooding across the area through the end of the week. 


&& 


Discussion... 
a very complex short term forecast tonight with numerous mesoscale 
and synoptic scale features converging near the forecast area. 
First...diurnally forced convection this afternoon over higher 
terrain has largely dissipated...but not before sending numerous 
outflow boundaries downhill into Lower Desert locations. 
Meanwhile...regional radar imagery depicts a very well defined Gulf 
surge plowing north up the Colorado River valley and towards central 
Arizona. In fact...knyl observational dewpoint jumped from 49 to 68 
degrees in one hour with this surge. And not to be left out...the 
outer band of Odile has incurred enough lift to form banded 
convective elements through far southern Arizona this evening. 


The combination of these outflow boundaries intersecting the very 
moist Gulf surge...juxtaposed with weak ascent on the tropical bands 
was causing a well defined deep moisture convergent signature along 
the southern boundary of the forecast area. A general blend of the 
operational NAM-WRF and high resolution emc nmm-b seems to best 
capture this scenario which continues to fester convection along 
this developing deformation band from Pinal through southern Yuma 
County...with some hint of cells trying to propagate north with 
time. Other than adjusting probability of precipitation to account for this 
thinking...extensive cloud cover will likely keep low temperatures warmer 
than previously anticipated while also likely holding highs lower 
tomorrow. Have blended unbiased 00z NAM and consensus models which 
seem to match forecast soundings well. Otherwise...previous 
headlines hold with bet potential for heaviest rainfall late 
Wednesday into Thursday. 


&& 


Previous discussion... 
obviously the main focus of the forecast is on the impacts 
associated with Hurricane Odile. The surge of moisture will occur 
late tonight /following this evening's decaying storms/ and precipitable waters  
will skyrocket close to 2 inches by Tuesday morning. These values 
would normally be unheard of for September...except we saw similar 
values just last week. Elevated precipitable waters  will remain across the region 
through at least Thursday...if not into Friday when a larger scale 
trough Ushers in southwesterly flow aloft. If anything has changed 
with recent model runs...it would appear the axis of highest 
moisture has shifted a bit to the east. Where the axis was once 
positioned squarely over the Colorado River...its now spread over a 
good portion of south-central Arizona. As usual...trying to pinpoint 
the exact timing/placement of the heaviest rain is nearly impossible 
with tropical systems. The 00z runs of the European model (ecmwf) and GFS both seem 
to indicate a shortwave trough moving through the area on Wednesday 
/perhaps as early as Wednesday morning/...with a secondary trough 
sweeping through Thursday. I have increased probability of precipitation during this time 
and will highlight these times as the most likely to see heavy 
rainfall/flooding impacts. 


Eventually a large scale trough will move through California late in 
the week and begin advecting somewhat drier air into the region from 
the west. Both the European model (ecmwf) and GFS indicate strong southwesterly flow 
and a shortwave trough moving through on Friday...which would likely 
result in another round of showers and thunderstorms mainly east of 
the Colorado River. The emphasis late in the week would shift to the 
North/East of Phoenix given favorable upslope flow although 
scattered showers would still be possible across the deserts. It 
looks like the deepest precipitable waters  should be advected east of Arizona this 
weekend but until then...I kept probability of precipitation well above climatological 
normals until Sunday. 


&& 


Aviation... 
south-central Arizona including kphx...kiwa...and ksdl... 
lower confidence forecast as outflow boundaries from the northeast 
combine with moisture surges from the southwest to create shifting 
winds and scattered rain showers/thunderstorms and rain through this evening. Isolated rain showers may 
continue into Tuesday morning as thick high clouds prevail...and may 
also begin to form a lower deck. Some model output suggests a 3k-5k 
feet deck by sunrise...however with limited current observational 
evidence will only mention scattered coverage at this time. Possibly more 
extensive coverage of rain showers/thunderstorms and rain may be possible Tuesday evening. 


Southeast California and southwest Arizona including kipl and kblh... 
rain showers/thunderstorms and rain should remain south and east of southeastern California terminals 
through Tuesday afternoon...but may enter the picture Tuesday 
evening. Most significant impacts will be periods of gusty south 
winds overnight and Tuesday morning (especially at kblh) associated 
with a surge of a very humid airmass from the Gulf of California. 
Though confidence is low...there may be areas of ceilings near the 3k feet 
MVFR threshold Tuesday morning in combination with this Gulf surge. 
Ceilings should increase above this threshold by Tuesday afternoon. 


Aviation discussion not updated for amended tafs. 


&& 


Fire weather... 
Thursday through Monday... 
unusually wet conditions will be likely Thursday and Friday across 
Arizona...with the potential for somewhat less activity over southeastern 
California. Several areas could experience heavy rainfall and 
localized flooding as a result. Showers and thunderstorms should 
become less numerous over the weekend...though will still likely 
prevail over parts of central Arizona. With the very moist 
conditions...afternoon humidity values will only fall into a 20-40 
percent range with excellent overnight recovery. Winds will 
generally favor a southerly direction and could become gusty around 
thunderstorms. 


&& 


Psr watches/warnings/advisories... 


Arizona...Flash Flood Watch from Wednesday morning through Thursday 
afternoon azz021>024-027-028. 


California...none. 


&& 


$$ 


Visit US on facebook...twitter...and at weather.Gov/Phoenix 


Discussion...MO 
previous discussion...leins 
aviation...MO 
fire weather...MO 



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