Tempe, Arizona Weather Conditions

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Excessive Heat Warning View All Alerts

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Current Conditions

  • 89°
  • Partly Cloudy
  • Wind: East 4 mph
  • Humidity: 30%
  • Visibility: 10.0 miles
  • Dew Point: 54°
  • Pressure: 29.77 in. +
  • Heat Index: 87

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Next 12 Hours

6  am
9  am
12  pm
3  pm
6  pm
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
90°
96°
105°
109°
109°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Tuesday
  • Clear
  • High: 112 °
  • Low: 85 °
  • Clear
  • Wednesday
  • Clear
  • High: 112 °
  • Low: 86 °
  • Clear
  • Thursday
  • Partly Cloudy
  • High: 111 °
  • Low: 85 °
  • Partly Cloudy
  • Friday
  • Clear
  • High: 108 °
  • Low: 83 °
  • Clear
  • Saturday
  • Clear
  • High: 106 °
  • Low: 82 °
  • Clear

Forecast for Tempe, Arizona

Updated: 5:00 AM MST on January 04, 2015

Excessive heat warning in effect from 11 am this morning to 8 PM MST this evening...
  • Tuesday

    Abundant sunshine. High 112F. Winds WSW at 10 to 15 mph.

  • Tuesday Night

    Clear skies. Low near 85F. Winds W at 10 to 15 mph.

  • Wednesday

    Mainly sunny. High 112F. S winds shifting to W at 10 to 15 mph.

  • Wednesday Night

    Partly cloudy. Low 86F. Winds W at 10 to 15 mph.

  • Thursday

    Sunshine and clouds mixed. High 111F. Winds WSW at 10 to 15 mph.

  • Thursday Night

    Partly cloudy skies. Low near 85F. Winds SSW at 5 to 10 mph.

  • Friday

    Sunshine and some clouds. High 108F. Winds S at 10 to 15 mph.

  • Friday Night

    A few clouds. Low 83F. Winds SE at 10 to 15 mph.

  • Saturday

    Abundant sunshine. High 106F. Winds S at 10 to 15 mph.

  • Saturday Night

    Clear. Low 82F. W winds shifting to E at 10 to 15 mph.

  • Sunday

    Sunny skies. High 107F. Winds S at 5 to 10 mph.

  • Sunday Night

    Mostly clear. Low 84F. Winds W at 5 to 10 mph.

  • Monday

    Mostly sunny skies. High 107F. Winds WNW at 5 to 10 mph.

  • Monday Night

    Mostly clear skies. Low 83F. Winds NE at 5 to 10 mph.

  • Tuesday

    Generally sunny despite a few afternoon clouds. High 107F. ESE winds shifting to WSW at 10 to 15 mph.

  • Tuesday Night

    A few clouds from time to time. Low 83F. Winds SSW at 5 to 10 mph.

  • Wednesday

    Sunny skies. High 107F. Winds SSE at 5 to 10 mph.

  • Wednesday Night

    Mostly clear skies. Low 84F. Winds NW at 5 to 10 mph.

  • Thursday

    Mostly sunny skies. High 107F. Winds S at 5 to 10 mph.

  • Thursday Night

    A few clouds. Low 84F. Winds NW at 5 to 10 mph.

  • Friday

    Partly cloudy. High 109F. Winds NNW at 5 to 10 mph.

  • Friday Night

    Mostly clear skies. Low near 85F. Winds NW at 5 to 10 mph.

Severe Weather Alert Descriptions

 Excessive Heat Warning  Statement as of 3:14 am MST on August 4, 2015


... Excessive heat warning remains in effect from 11 am MST /11 am
PDT/ this morning to 8 PM MST /8 PM PDT/ this evening...

... Excessive heat warning remains in effect from 11 am MST /11 am
PDT/ to 8 PM MST /8 PM PDT/ Wednesday...

* affected area... the lower deserts extending from southeast
California to south central Arizona... including the population
centers of Imperial... Yuma... Blythe... Gila Bend... Phoenix...
and Casa Grande.

* Temperature... 112 to 115 degrees today and Wednesday... with the
hottest temperatures across southeast California... and along
portions of the lower Colorado River valley.

* Impacts... people playing or working outdoors... as well as
those without access to air conditioning... will face an
elevated risk of heat related illness. Depending upon the
amount of exposure and the health of an individual... heat
illness can range from mild to fatal.

Precautionary/preparedness actions...

Never leave kids or pets unattended in cars. Drink more water
than usual. If outdoors... wear light colored clothing and a wide
brimmed hat to keep your body cooler. Try to stay cool in shaded or
air conditioned environments.

Recognize the signs and symptoms of heat illness. Early symptoms
include things such as headache... thirst... and muscle cramps.
Untreated heat illness can lead to heat stroke and be fatal.

Stay cool... stay hydrated... stay informed.







Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Meyer Park, Tempe, AZ

Updated: 6:47 AM MST

Temperature: 84.9 °F Dew Point: 53 °F Humidity: 33% Wind: Calm Pressure: 29.84 in Hourly Precipitation: 0.00 in Heat Index: 83 °F Graphs

Location: MesoWest, Tempe, AZ

Updated: 5:55 AM MST

Temperature: 86 °F Dew Point: 53 °F Humidity: 32% Wind: SSW at 1 mph Pressure: 29.87 in Hourly Precipitation: 0.00 in Heat Index: 84 °F Graphs

Location: University Heights, Tempe, AZ

Updated: 6:45 AM MST

Temperature: 86.4 °F Dew Point: 53 °F Humidity: 31% Wind: North at - Pressure: 29.88 in Hourly Precipitation: - Heat Index: 84 °F Graphs

Location: Apache Boulevard, Tempe, AZ

Updated: 6:45 AM MST

Temperature: 89.4 °F Dew Point: 56 °F Humidity: 32% Wind: North at - Pressure: 28.42 in Hourly Precipitation: - Heat Index: 88 °F Graphs

Location: APRSWXNET, Tempe, AZ

Updated: 6:18 AM MST

Temperature: 86 °F Dew Point: 54 °F Humidity: 34% Wind: Calm Pressure: 30.00 in Hourly Precipitation: 0.00 in Heat Index: 84 °F Graphs

Location: Bradley Estates, Tempe, AZ

Updated: 6:45 AM MST

Temperature: 83.6 °F Dew Point: 59 °F Humidity: 44% Wind: Calm Pressure: 29.74 in Hourly Precipitation: 0.00 in Heat Index: 84 °F Graphs

Location: D'Amore Engineering, Tempe, AZ

Updated: 6:47 AM MST

Temperature: 89.5 °F Dew Point: 57 °F Humidity: 33% Wind: ENE at 1.0 mph Pressure: 29.76 in Hourly Precipitation: 0.00 in Heat Index: 88 °F Graphs

Location: Down Stream Dam, Tempe, AZ

Updated: 6:45 AM PDT

Temperature: 88.8 °F Dew Point: 50 °F Humidity: 27% Wind: WSW at 2.0 mph Pressure: 29.89 in Hourly Precipitation: 0.00 in Heat Index: 86 °F Graphs

Location: Mesa, AZ, Mesa, AZ

Updated: 6:45 AM MST

Temperature: 81.0 °F Dew Point: 58 °F Humidity: 45% Wind: Calm Pressure: 29.76 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: CVE III, Tempe, AZ

Updated: 6:47 AM MST

Temperature: 87.9 °F Dew Point: 58 °F Humidity: 36% Wind: Calm Pressure: 29.75 in Hourly Precipitation: 0.00 in Heat Index: 87 °F Graphs

Location: MesoWest, Tempe, AZ

Updated: 5:55 AM MST

Temperature: 88 °F Dew Point: 48 °F Humidity: 25% Wind: NW at 3 mph Pressure: 29.80 in Hourly Precipitation: 0.00 in Heat Index: 85 °F Graphs

Location: Main and Dobson, Mesa, AZ

Updated: 6:40 AM MST

Temperature: 87.1 °F Dew Point: 54 °F Humidity: 33% Wind: Calm Pressure: 29.87 in Hourly Precipitation: 0.00 in Heat Index: 85 °F Graphs

Location: Down to Earth Enterprises, Tempe, AZ

Updated: 6:45 AM MST

Temperature: 85.6 °F Dew Point: 61 °F Humidity: 44% Wind: ESE at 1.0 mph Pressure: 29.75 in Hourly Precipitation: 0.00 in Heat Index: 86 °F Graphs

Location: Rural / Guadalupe, Tempe, AZ

Updated: 6:47 AM MST

Temperature: 86.9 °F Dew Point: 61 °F Humidity: 42% Wind: Calm Pressure: 29.64 in Hourly Precipitation: 0.00 in Heat Index: 87 °F Graphs

Location: Mesa, AZ

Updated: 6:45 AM MST

Temperature: 85.2 °F Dew Point: 57 °F Humidity: 39% Wind: Calm Pressure: 29.78 in Hourly Precipitation: 0.00 in Heat Index: 84 °F Graphs

Location: Carver Terrace, Tempe, AZ

Updated: 6:02 AM MST

Temperature: 80.8 °F Dew Point: 57 °F Humidity: 44% Wind: Calm Pressure: 29.79 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: Raintree, Tempe, AZ

Updated: 6:45 AM MST

Temperature: 83.8 °F Dew Point: 62 °F Humidity: 47% Wind: North at - Pressure: 29.82 in Hourly Precipitation: - Heat Index: 84 °F Graphs

Location: 74th Street and McDowell Road, Scottsdale, AZ

Updated: 6:47 AM MST

Temperature: 84.7 °F Dew Point: 54 °F Humidity: 35% Wind: Calm Pressure: 29.77 in Hourly Precipitation: 0.00 in Heat Index: 83 °F Graphs

Location: South Mountain, East, Phoenix, AZ

Updated: 6:43 AM MST

Temperature: 91.9 °F Dew Point: 56 °F Humidity: 30% Wind: SSE at 5.8 mph Pressure: 29.87 in Hourly Precipitation: - Heat Index: 90 °F Graphs

Location: Heard Ranch, Phoenix, AZ

Updated: 6:37 AM MST

Temperature: 83.7 °F Dew Point: 60 °F Humidity: 45% Wind: Calm Pressure: 29.74 in Hourly Precipitation: - Heat Index: 84 °F Graphs

Location: East Greentree Drive, Tempe, AZ

Updated: 6:45 AM MST

Temperature: 83.7 °F Dew Point: 65 °F Humidity: 52% Wind: North at - Pressure: 29.94 in Hourly Precipitation: - Heat Index: 85 °F Graphs

Location: Sherwood Estates, Scottsdale, AZ

Updated: 6:47 AM MST

Temperature: 89.2 °F Dew Point: 58 °F Humidity: 35% Wind: ESE at 1.6 mph Pressure: 28.53 in Hourly Precipitation: 0.00 in Heat Index: 88 °F Graphs

Location: Alta Mira, Tempe, AZ

Updated: 6:47 AM MST

Temperature: 84.0 °F Dew Point: 62 °F Humidity: 48% Wind: Calm Pressure: 29.77 in Hourly Precipitation: 0.00 in Heat Index: 85 °F Graphs

Location: Cambridge Ave., Phoenix, AZ

Updated: 6:45 AM MST

Temperature: 86.4 °F Dew Point: 56 °F Humidity: 36% Wind: SSW at 1.7 mph Pressure: 29.79 in Hourly Precipitation: - Heat Index: 85 °F Graphs

Location: North Desoto Street, Chandler, AZ

Updated: 6:45 AM MST

Temperature: 81.7 °F Dew Point: 53 °F Humidity: 37% Wind: North at - Pressure: 29.73 in Hourly Precipitation: - Heat Index: 81 °F Graphs

Location: AZCC, Phoenix, AZ

Updated: 6:47 AM MST

Temperature: 84.2 °F Dew Point: 59 °F Humidity: 43% Wind: Calm Pressure: 29.78 in Hourly Precipitation: 0.00 in Heat Index: 84 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion...updated 
National Weather Service Phoenix Arizona 
535 am MST Tuesday Aug 4 2015 


Update...updated aviation and fire weather discussions. 


&& 


Synopsis... 
clear skies with drier and hotter weather is forecast through 
Wednesday...with high temperatures on the lower deserts ranging from 
112 to 115 degrees. Monsoon humidity will return to the area 
Thursday and Friday...providing a threat of afternoon and evening 
showers and thunderstorms...mainly over south-central Arizona along 
with cooler afternoon temperatures region wide. A low grade monsoon 
pattern will continue through the weekend and into early next week. 


&& 


Discussion... 
today and Wednesday...water vapor/infrared satellite imagery show an 
unusually deep trough approaching the West Coast is keeping the 
Desert Southwest under a dry southwesterly flow. Current models 
suggest that the upper level ridge currently flattened and stretched 
across northern Mexico/Texas will continue to amplify/strengthen... 
and position a 594-596dm 500mb center over Arizona/New Mexico. This 
pattern will introduce temperatures that are -- pretty hot -- in the 110 to 
115 range across our lower deserts today and Wednesday. With 
forecast afternoon temperatures approaching and meeting excessive 
heat warning criteria for most desert sites across southeast 
California and the southwest Arizona deserts...an excessive heat 
warning will remain in effect today and Wednesday. As the high 
repositions...there will be windows of opportunity for low-middle level 
moisture to begin sneaking back into the region. A good intrusion of 
moisture might be just enough to knock a degree or two off daytime 
highs...but any humidity increase will also keep those overnight 
lows quite warm. 


Thursday and Friday...low level wind flow becomes more southerly... 
and monsoon moisture spreads into southern Arizona Thursday. Both 
the GFS and European models direct a low level moisture surge into 
southwest Arizona...which overspreads the region late Thursday and 
Friday. An upper level disturbance also moves north into central 
Arizona Thursday renewing the threat for afternoon/evening showers 
and thunderstorms over portions of southwest and south-central 
Arizona...including Phoenix. 


Saturday and Sunday...drier and more stable airmass will spread into 
our forecast area from the west this weekend...and except for a 
slight chance of afternoon showers and thunderstorms over the higher 
terrain and mountains of southern Gila County/zone 24...the 
remainder of the forecast area will be dry. 


Monday...models forecast a significant upper level inverted trough 
to move into the southeast quarter of Arizona from Mexico Monday 
afternoon...which is strong enough for a threat of widespread shower 
and thunderstorm activity. However...models historically have 
forecast these inverted troughs to move into the region a little too 
fast. Perhaps Tuesday may be the big day instead. 


&& 


Aviation... 
south-central Arizona including kphx...kiwa...and ksdl... 
southeast California and southwest Arizona including kipl and 
kblh... 


No aviation concerns at any terminal for at least the next 24 hours. 
Dry westerly flow aloft will continue across the area and keep skies 
generally clear at the terminals. Winds to be light and favor normal 
diurnal tendencies. 


Aviation discussion not updated for amended tafs. 


&& 


Fire weather... 
Thursday through Monday... starting Thursday moisture flow from 
Mexico will return mainly to areas east of the lower Colorado River 
valley. A slight chance of afternoon and early evening showers and 
thunderstorms will return to south central Arizona Thursday and 
Friday while activity will be mostly limited to higher terrain areas 
east of Phoenix for the weekend. Minimum relative humidities of 15 
to 20 percent range will be common for the deserts during the 
period...except for the weekend when much drier air spreads into 
southeast California and the western Arizona deserts with humidities 
falling well below 15 percent. High temperatures will be well above 
normal Thursday... especially over the western deserts into 
southeast California...then will cool down to around or slightly 
above normal values Friday through the weekend. Winds will be light 
through much of the period following typical diurnal directions 
except for afternoon upslope breezes gusting at times up to 20 miles per hour. 


&& 


Spotter information statement... spotters are encouraged to report 
conditions according to Standard operating procedures. 


&& 


Psr watches/warnings/advisories... 


Arizona...excessive heat warning from 11 am to 8 PM MST today for 
azz020>023-025>028. 


Excessive heat warning from 11 am to 8 PM MST Wednesday for 
azz020>023-025>028. 


California...excessive heat warning from 11 am to 8 PM PDT today for 
caz031>033. 


Excessive heat warning from 11 am to 8 PM PDT Wednesday for 
caz031>033. 


&& 


$$ 


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


Discussion...Meyers/vasquez 
aviation...cumulonimbus 
fire weather...Kuhlman/cb 






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