Phoenix, Arizona Weather Conditions

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Current Conditions

  • 92°
  • Partly Cloudy
  • Wind: SW 4 mph
  • Humidity: 31%
  • Visibility: 10.0 miles
  • Dew Point: 57°
  • Pressure: 29.69 in. +
  • Heat Index: 91

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Next 12 Hours

8  pm
11  pm
2  am
5  am
8  am
Chance of a Thunderstorm
Chance of T-storms
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
90°
86°
81°
82°
86°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Friday
  • Chance of a Thunderstorm
  • High: 97 °
  • Low: 81 °
  • Chance of a Thunderstorm
  • Saturday
  • Chance of a Thunderstorm
  • High: 97 °
  • Low: 81 °
  • Chance of a Thunderstorm
  • Sunday
  • Clear
  • High: 97 °
  • Low: 82 °
  • Clear
  • Monday
  • Clear
  • High: 97 °
  • Low: 82 °
  • Clear
  • Tuesday
  • Clear
  • High: 99 °
  • Low: 79 °
  • Clear

Forecast for Phoenix, Arizona

Updated: 8:00 PM MST on September 19, 2014

  • Friday

    Partly cloudy with a chance of a thunderstorm and a chance of rain in the morning, then clear with a chance of a thunderstorm and a chance of rain. High of 97F. Winds less than 5 mph. Chance of rain 20%.

  • Friday Night

    Partly cloudy with a chance of a thunderstorm and a chance of rain. Low of 81F with a heat index of 88F. Winds less than 5 mph.

  • Saturday

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

  • Saturday 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.

  • Sunday

    Partly cloudy with a chance of a thunderstorm and a chance of rain in the morning, then clear with a chance of a thunderstorm and a chance of rain. High of 97F. Winds from the SSW at 5 to 10 mph.

  • Sunday Night

    Clear. Low of 82F. Winds less than 5 mph.

  • Monday

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

  • Monday Night

    Clear in the evening, then partly cloudy. Low of 82F. Winds less than 5 mph.

  • Tuesday

    Clear. High of 99F. Winds from the NNE at 5 to 10 mph shifting to the WNW in the afternoon.

  • Tuesday Night

    Clear. Low of 79F. Winds less than 5 mph.

  • Wednesday

    Clear. High of 100F. Winds less than 5 mph.

  • Wednesday Night

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

  • Thursday

    Clear. High of 99F. Winds from the South at 5 to 10 mph.

  • Thursday Night

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

  • Friday

    Partly cloudy with a chance of a thunderstorm. High of 90F. Winds from the South at 5 to 15 mph. Chance of rain 70% with rainfall amounts near 0.3 in. possible.

  • Friday Night

    Partly cloudy with a chance of a thunderstorm. Low of 75F. Winds from the SSW at 5 to 10 mph. Chance of rain 50% with rainfall amounts near 0.3 in. possible.

  • Saturday

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

  • Saturday Night

    Clear. Low of 64F. Winds less than 5 mph.

  • Sunday

    Clear. High of 88F. Winds less than 5 mph.

  • Sunday Night

    Clear. Low of 70F. Winds less than 5 mph.

  • Monday

    Clear. High of 88F. Winds less than 5 mph.

  • Monday Night

    Clear. Low of 70F. Winds less than 5 mph.

  • Tuesday

    Clear. High of 88F. Winds less than 5 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Cheery Lynn Historical District, Phoenix, AZ

Updated: 8:52 PM MST

Temperature: 86.5 °F Dew Point: 66 °F Humidity: 51% Wind: Calm Pressure: 29.78 in Hourly Precipitation: 0.00 in Heat Index: 89 °F Graphs

Location: Phoenix S of Christown, Phoenix, AZ

Updated: 8:46 PM MST

Temperature: 89.7 °F Dew Point: 61 °F Humidity: 38% Wind: WSW at 1.0 mph Pressure: 29.69 in Hourly Precipitation: 0.00 in Heat Index: 90 °F Graphs

Location: North Central Phoenix, Phoenix, AZ

Updated: 8:52 PM MST

Temperature: 85.6 °F Dew Point: 64 °F Humidity: 49% Wind: Calm Pressure: 29.65 in Hourly Precipitation: 0.00 in Heat Index: 87 °F Graphs

Location: Phoenix, Phoenix, AZ

Updated: 8:43 PM MST

Temperature: 87.3 °F Dew Point: 58 °F Humidity: 37% Wind: Calm Pressure: 29.68 in Hourly Precipitation: 0.00 in Heat Index: 86 °F Graphs

Location: Werner Ent. Phoenix, Phoenix, AZ

Updated: 8:52 PM MST

Temperature: 88.8 °F Dew Point: 57 °F Humidity: 34% Wind: Calm Pressure: 29.69 in Hourly Precipitation: 0.00 in Heat Index: 87 °F Graphs

Location: South Phoenix/Laveen, Phoenix, AZ

Updated: 8:50 PM MST

Temperature: 86.5 °F Dew Point: 61 °F Humidity: 42% Wind: Calm Pressure: 29.80 in Hourly Precipitation: 0.00 in Heat Index: 86 °F Graphs

Location: Dateland Palms, Phoenix, AZ

Updated: 8:52 PM MST

Temperature: 87.1 °F Dew Point: 63 °F Humidity: 44% Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Heat Index: 88 °F Graphs

Location: South Mountain, East, Phoenix, AZ

Updated: 8:43 PM MST

Temperature: 87.8 °F Dew Point: 55 °F Humidity: 33% Wind: NW at 1.7 mph Pressure: 29.79 in Hourly Precipitation: - Heat Index: 86 °F Graphs

Location: AZCC, Phoenix, AZ

Updated: 8:52 PM MST

Temperature: 83.0 °F Dew Point: 66 °F Humidity: 57% Wind: Calm Pressure: 29.70 in Hourly Precipitation: 0.00 in Heat Index: 85 °F Graphs

Location: Down Stream Dam, Tempe, AZ

Updated: 8:50 PM PDT

Temperature: 90.3 °F Dew Point: 53 °F Humidity: 28% Wind: Calm Pressure: 29.81 in Hourly Precipitation: 0.00 in Heat Index: 88 °F Graphs

Location: Ingleside Track, Phoenix, AZ

Updated: 8:52 PM MST

Temperature: 82.0 °F Dew Point: 66 °F Humidity: 59% Wind: Calm Pressure: 29.68 in Hourly Precipitation: 0.00 in Heat Index: 84 °F Graphs

Location: Spur Circle, Scottsdale, AZ

Updated: 8:51 PM MST

Temperature: 85.1 °F Dew Point: 63 °F Humidity: 48% Wind: Calm Pressure: 29.79 in Hourly Precipitation: - Heat Index: 86 °F Graphs

Location: Down to Earth Enterprises, Tempe, AZ

Updated: 8:50 PM MST

Temperature: 88.3 °F Dew Point: 57 °F Humidity: 35% Wind: Calm Pressure: 29.65 in Hourly Precipitation: 0.00 in Heat Index: 87 °F Graphs

Location: Scottsdale - Old Town, Scottsdale, AZ

Updated: 8:46 PM MST

Temperature: 82.8 °F Dew Point: 63 °F Humidity: 51% Wind: Calm Pressure: 29.74 in Hourly Precipitation: - Heat Index: 84 °F Graphs

Location: Tempe, AZ

Updated: 8:47 PM MST

Temperature: 90.0 °F Dew Point: 53 °F Humidity: 28% Wind: Calm Pressure: 29.60 in Hourly Precipitation: - Heat Index: 88 °F Graphs

Location: Northern Palms, Phoenix, AZ

Updated: 8:52 PM MST

Temperature: 89.2 °F Dew Point: 61 °F Humidity: 39% Wind: Calm Pressure: 29.62 in Hourly Precipitation: 0.00 in 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 
840 PM MST Friday Sep 19 2014 


Synopsis... 
lingering moisture across the region and low pressure approaching 
from the west will keep at least slight chances for showers and 
thunderstorms in the forecast through Saturday. Drier air will 
gradually filter into the region Sunday and Monday for a decline in 
storm chances. With little change through Wednesday...storm chances 
remain very slight and limited to the higher mountains of 
south-central Arizona. Temperatures will gradually warm as well. An 
approaching Pacific weather system late next week will lead to an 
increase in storm chances over the higher terrain of south-central 
Arizona. 


&& 


Discussion... 
the only convection this evening at 03z Sat was over the remote 
parts of southern Gila County bordering the higher White Mountains. 
Some of these storms had tops to 50 thousand feet...meaning some upper 
level support. 


Overall...morning and evening regional weather balloon soundings 
continued to show excessive amounts of boundary layer moisture 
below 12 thousand feet. 800-850 mb dewpoints at or above 14 degree c 
demarks the excessive range. The morning tus and phx soundings 
measured 15 c...and even with afternoon boundary layer mixing the 
tus sounding still showed a dewpoint of 14 c. Whoa. In other 
words...there is a tremendous amount of potential energy stored in 
the boundary layer. 


In the upper levels...models have been fairly consistent in moving 
an offshore Santa Barbara cutoff low inland toward central California 
tonight. Upper level winds in Arizona increase and become slightly 
difluent over central Arizona...including Phoenix by sunrise Saturday 
morning. Stronger than normal winds aloft are usually worrisome over 
a warm and very moist boundary layer...even overnight...E.G. Sept 
8th. 


Therefore...because of the above mentioned parameters...we feel more 
comfortable continuing a slight chance of showers/thunderstorms over a large 
part of south central Arizona tonight into Saturday morning. And... 
because of the tremendous amount of boundary layer moisture 
remaining...even low topped small convection has the potential for 
heavy rainers. 


The remainder of Sat and Sat night forecasts look OK. Updates to 
continue the slight chance of showers/thunderstorms overnight in south central 
Arizona will be issued shortly. 


Previous discussion...250 PM MST... 
low pressure spinning off California coast will have little forward 
propagation and will slowly migrate northeastward across the Great 
Basin throughout the coming weekend. With high pressure situated 
across northern Mexico and southern New Mexico...a southerly flow 
will continue to stream in some moisture from the tropics keeping 
our mixing ratios and dewpoints elevated. Chances for precipitation 
should be limited to higher elevation terrain through Monday where 
the instability and axis of greatest dynamics will reside. Not an 
impressive amount of instability is forecast across the lower and 
central deserts this weekend but can not rule out a stray isolated 
shower. Fairly moist column of air in place...precipitable water values remaining 
around the 1.5 inch mark...along with some ascent from the boundary 
layer through middle-layers /600-700mb or 10-15k ft/. 


Monday...as the upper level trough pushes northeast through the 
Great Basin...high pressure will develop back across the southwest 
deserts allowing the temperature to nudge up a degree or two each 
day. The previous shift did well with temperatures so very minor 
changes were made...keeping temperatures a handful of degrees above 
or below seasonal normal /99f for Phoenix and 101f for Yuma/ through 
the week. With a more westerly component in the wind flow 
pattern...mixing ratios are forecast to drop down around 6-8 g/kg 
range from southeast California into the central Arizona deserts 
early next week. Even with high pressure in place across northern 
Mexico...the favorable wind flow and lack of moisture should Ward 
off our chances for any storms that may try to form. Ensemble and 
deterministic models have well advertised the trough feature slowly 
moving northward only to be absorbed in the longwave trough pattern. 
Even past 115 hours both European model (ecmwf) and GFS...and respective ensemble 
members...have the next upper level disturbance well agreed upon by 
late week Thursday/Friday beginning to impact the western coast. 




Previous discussion.../issued 410 am MST/PDT Friday 19 sept/... 
today through Sunday... 


Monday through Thursday... 
with ridging beginning to build in Monday along with some additional 
drying...temperatures will be a bit warmer and probability of precipitation will be limited to low 
end slight chance over the higher mountains of south-central 
Arizona. Look for slight additional warming Tuesday with little 
change Wednesday along with little change in probability of precipitation. By Thursday...a 
Pacific trough moves inland and draws some moisture northward. 
Slight chance area was broadened but still confined to the higher 
terrain of south-central Arizona. 


&& 


Aviation... 
south-central Arizona including kphx...kiwa...and ksdl... 
through 19z Sat...sct-bkn clouds at or above 10 thousand mean sea level. Light wind under 8 
knots. 




Southeast California and southwest Arizona including kipl and kblh... 
mainly clear skies and light wind to prevail across the area through 
19z Sat. 


Aviation discussion not updated for amended tafs. 


&& 


Fire weather... 
Monday through Friday... 
rather dry westerly flow to keep skies mainly clear through the 
forecast period at most locations across the region...with the 
exception of the higher terrain of south-central Arizona...where 
lingering moisture may allow isolated showers/thunderstorms to 
develop each afternoon/early evening. Minimum relative humidities to 
fall into the 20 to 30 percent range each afternoon...with good to 
excellent overnight recoveries. Winds to remain mainly on the light 
side...mainly in the 5 to 15 miles per hour range...with the usual diurnal 
trends to prevail at most locations. 




&& 


Psr watches/warnings/advisories... 


Arizona...none. 


California...none. 


&& 


$$ 


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


Discussion...vasquez/Dewey 
aviation...vasquez 
fire weather...Meyers/percha 



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