Fountain Hills, Arizona Weather Conditions

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Current Conditions

  • 86°
  • Clear
  • Wind: NNE 4 mph
  • Humidity: 35%
  • Visibility: 10.0 miles
  • Dew Point: 55°
  • Pressure: 29.86 in. 0
  • Heat Index: 84

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Next 12 Hours

11  pm
2  am
5  am
8  am
11  am
Clear
Clear
Clear
Clear
Clear
Clear
Partly Cloudy
Partly Cloudy
Clear
Clear
84°
82°
79°
82°
91°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Monday
  • Partly Cloudy
  • High: 97 °
  • Low: 77 °
  • Partly Cloudy
  • Tuesday
  • Clear
  • High: 97 °
  • Low: 77 °
  • Clear
  • Wednesday
  • Clear
  • High: 97 °
  • Low: 79 °
  • Clear
  • Thursday
  • Clear
  • High: 97 °
  • Low: 79 °
  • Clear
  • Friday
  • Clear
  • High: 97 °
  • Low: 75 °
  • Clear

Forecast for Fountain Hills, Arizona

Updated: 8:00 PM MST on September 21, 2014

  • Sunday

    Clear. High of 97F. Winds from the SSW at 5 to 10 mph.

  • Sunday Night

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

  • Monday

    Partly cloudy in the morning, then clear. High of 97F. Winds less than 5 mph.

  • Monday Night

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

  • Tuesday

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

  • Tuesday Night

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

  • Wednesday

    Clear. High of 97F. Winds from the NNE at 5 to 10 mph shifting to the WNW in the afternoon.

  • Wednesday Night

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

  • Thursday

    Clear. High of 97F. Winds from the SSE at 5 to 10 mph.

  • Thursday Night

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

  • Friday

    Clear. High of 97F. Winds from the South at 5 to 10 mph.

  • Friday Night

    Partly cloudy with a chance of a thunderstorm. Low of 75F. Winds less than 5 mph. Chance of rain 80% with rainfall amounts near 1.7 in. possible.

  • Saturday

    Clear with a chance of a thunderstorm. High of 91F. Winds from the SW at 10 to 15 mph. Chance of rain 70% with rainfall amounts near 0.4 in. possible.

  • Saturday Night

    Clear. Low of 66F. Winds from the WNW at 5 to 10 mph shifting to the NNE after midnight.

  • Sunday

    Clear. High of 82F. Winds from the North at 5 to 10 mph shifting to the West in the afternoon.

  • Sunday Night

    Clear. Low of 66F. Winds from the NW at 5 to 10 mph shifting to the NE after midnight.

  • Monday

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

  • Monday Night

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

  • Tuesday

    Clear. High of 86F. Winds less than 5 mph.

  • Tuesday Night

    Clear. Low of 66F. Winds less than 5 mph.

  • Wednesday

    Mostly cloudy with a chance of rain. High of 86F. Winds less than 5 mph. Chance of rain 50%.

  • Wednesday Night

    Mostly cloudy with a chance of a thunderstorm. Low of 66F. Winds less than 5 mph. Chance of rain 50%.

  • Thursday

    Clear. High of 86F. Winds less than 5 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Fountain Hills Blvd @ El Lago, Fountain Hills, AZ

Updated: 11:11 PM MST

Temperature: 81.3 °F Dew Point: 56 °F Humidity: 42% Wind: NE at 1.0 mph Pressure: 29.80 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: FHHS- Research Club, Fountain Hills, AZ

Updated: 11:10 PM MST

Temperature: 78.8 °F Dew Point: 50 °F Humidity: 37% Wind: West at 2.0 mph Pressure: 29.82 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Ft McD Yuma Frank-AZ, Fort McDowell, AZ

Updated: 10:50 PM MST

Temperature: 79.9 °F Dew Point: - Humidity: 50% Wind: North at - Pressure: 28.46 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: Ranch Highlands, Scottsdale, AZ

Updated: 11:11 PM MST

Temperature: 81.4 °F Dew Point: 58 °F Humidity: 45% Wind: Calm Pressure: 29.80 in Hourly Precipitation: 0.00 in Heat Index: 82 °F Graphs

Location: Overlook at McDowell Mountain, Scottsdale, AZ

Updated: 11:11 PM MST

Temperature: 83.8 °F Dew Point: 52 °F Humidity: 33% Wind: Calm Pressure: 29.95 in Hourly Precipitation: 0.00 in Heat Index: 82 °F Graphs

Location: McDowell Mtn Ranch, Scottsdale, AZ

Updated: 11:11 PM MST

Temperature: 82.2 °F Dew Point: 52 °F Humidity: 35% Wind: Calm Pressure: 29.94 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: Vista Del Rincon, Scottsdale, AZ

Updated: 11:11 PM MST

Temperature: 82.7 °F Dew Point: 54 °F Humidity: 38% Wind: Calm Pressure: 29.82 in Hourly Precipitation: 0.00 in Heat Index: 82 °F Graphs

Location: Lost Canyon, Scottsdale, AZ

Updated: 11:07 PM MST

Temperature: 82.2 °F Dew Point: 51 °F Humidity: 34% Wind: East at 3.0 mph Pressure: 29.86 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: Rio Verde Foothills, Scottsdale, AZ

Updated: 11:09 PM MST

Temperature: 76.3 °F Dew Point: 55 °F Humidity: 47% Wind: ENE at 2.2 mph Pressure: 27.17 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Power/McDowell, Mesa, AZ

Updated: 11:10 PM MST

Temperature: 86.1 °F Dew Point: 57 °F Humidity: 37% Wind: North at 2.0 mph Pressure: 29.33 in Hourly Precipitation: 0.00 in Heat Index: 85 °F Graphs

Location: McKellips & Val Vista, Mesa, AZ

Updated: 12:11 AM MDT

Temperature: 80.2 °F Dew Point: 64 °F Humidity: 57% Wind: ENE at 2.2 mph Pressure: 29.98 in Hourly Precipitation: - Heat Index: 82 °F Graphs

Location: Apache Wells Park, Mesa, AZ

Updated: 11:10 PM MST

Temperature: 85.1 °F Dew Point: 59 °F Humidity: 41% Wind: North at 3.7 mph Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: 85 °F Graphs

Location: Las Sendas, Mesa, AZ

Updated: 11:11 PM MST

Temperature: 84.0 °F Dew Point: 57 °F Humidity: 40% Wind: North at 2.3 mph Pressure: 29.81 in Hourly Precipitation: 0.00 in Heat Index: 83 °F Graphs

Location: Pinnacle Peak East, Scottsdale, AZ

Updated: 11:10 PM MST

Temperature: 76.8 °F Dew Point: 54 °F Humidity: 46% Wind: Calm Pressure: 28.88 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Paper Street, Scottsdale, AZ

Updated: 11:11 PM MST

Temperature: 79.7 °F Dew Point: 62 °F Humidity: 54% Wind: Calm Pressure: 30.00 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: Desert Uplands - Mesa, Mesa, AZ

Updated: 10:57 PM MST

Temperature: 82.8 °F Dew Point: 59 °F Humidity: 44% Wind: NE at 2.7 mph Pressure: 29.83 in Hourly Precipitation: - Heat Index: 83 °F Graphs

Location: MCC Red Mountain, Mesa, AZ

Updated: 11:11 PM MST

Temperature: 85.0 °F Dew Point: 58 °F Humidity: 40% Wind: WSW at 4.0 mph Pressure: 28.43 in Hourly Precipitation: 0.00 in Heat Index: 84 °F Graphs

Location: Pima & Pinnacle Peak, Scottsdale, AZ

Updated: 11:11 PM MST

Temperature: 78.6 °F Dew Point: 53 °F Humidity: 41% Wind: Calm Pressure: 29.88 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Northeast Mesa, Mesa, AZ

Updated: 11:02 PM MST

Temperature: 84.4 °F Dew Point: 60 °F Humidity: 44% Wind: Calm Pressure: 29.89 in Hourly Precipitation: 0.00 in Heat Index: 84 °F Graphs

Location: Central Scottsdale, AZ, Scottsdale, AZ

Updated: 12:11 AM MDT

Temperature: 82.4 °F Dew Point: 59 °F Humidity: 45% Wind: Calm Pressure: 29.75 in Hourly Precipitation: 0.00 in Heat Index: 82 °F Graphs

Location: Mesa, AZ

Updated: 11:01 PM MST

Temperature: 86.2 °F Dew Point: 57 °F Humidity: 37% Wind: WSW at 1.0 mph Pressure: 29.75 in Hourly Precipitation: - Heat Index: 85 °F Graphs

Location: Mountain Bridge, Mesa, AZ

Updated: 11:01 PM MST

Temperature: 85.8 °F Dew Point: 56 °F Humidity: 36% Wind: NNE at 1.0 mph Pressure: 29.87 in Hourly Precipitation: 0.00 in Heat Index: 84 °F Graphs

Location: Kierland, Scottsdale, AZ

Updated: 11:11 PM MST

Temperature: 79.3 °F Dew Point: 57 °F Humidity: 47% Wind: Calm Pressure: 29.77 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

Location: Grayhawk, Scottsdale, AZ

Updated: 11:11 PM MST

Temperature: 79.0 °F Dew Point: 56 °F Humidity: 46% Wind: SW at 3.0 mph Pressure: 29.31 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

Location: Beeline, Mesa, AZ

Updated: 11:11 PM MST

Temperature: 83.7 °F Dew Point: 60 °F Humidity: 45% Wind: NE at 5.0 mph Pressure: 29.81 in Hourly Precipitation: 0.00 in Heat Index: 84 °F Graphs

Location: APRSWXNET Mesa AZ US, Mesa, AZ

Updated: 7:15 PM MST

Temperature: 89 °F Dew Point: 55 °F Humidity: 32% Wind: Calm Pressure: 29.77 in Hourly Precipitation: 0.00 in Heat Index: 87 °F Graphs

Location: Troon Village, Scottsdale, AZ

Updated: 11:10 PM MST

Temperature: 78.5 °F Dew Point: 50 °F Humidity: 37% Wind: Calm Pressure: 29.85 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service Phoenix Arizona 
810 PM MST sun Sep 21 2014 


Synopsis... 
drier air will gradually filter into the region through middle week 
leading to drastic decline in storm chances. Slight chances for 
showers and thunderstorms will be confined to the higher mountains 
of south-central Arizona through Monday. Slightly above normal 
temperatures are anticipated through the middle of this week. An 
approaching Pacific weather system likely affecting the Desert 
Southwest on Friday and Saturday will lead to an increase in storm 
chances and cooler temperatures. 


&& 


Discussion... 
the vigorous Pacific trough over central and Southern California yesterday 
continued its northeastward track into northeast Nevada today. In its 
wake at our latitude...a drier boundary layer and more stable upper 
level winds moved into most of southwest and south central Arizona for 
nearly clear skies. The exception was in eastern Arizona...including the 
far portions of our zone 24 southern Gila County where a few mountain 
thunderstorms developed in remnant monsoon moisture. Convective threats will 
end over southern Gila County in a few hours. Otherwise dry and 
warmer days are expected through Tuesday. 


Minor updates to first period forecasts were sent earlier. Previous 
discussion below still applies. 




Previous discussion...245 PM MST... 
early afternoon radar imagery filling in with thunderstorms along 
the eastern half of Arizona in the White Mountains from Cochise 
County north through portions of Coconino County and northern 
portions of Mohave County. From southeast California through the 
East Valley of the greater Phoenix metropolitan mostly clear skies have 
been the story today with steady or falling dewpoint values. As of 
215 PM MST/PDT the dewpoint at Sky Harbor is sitting at 49f 
/9c/...so it is evident there is a boundary of dry air working into 
Arizona and slowly pushing east. Do not expect showers in the metropolitan 
area or central deserts this evening with a westerly flow and 
minimal moisture /1000-700 mb mixing ratios below 8 g/kg/. 


Gradual rising heights through most of the week...under a 591 dm 
ridge of high pressure and dominating westerly flow aloft...will 
allow temperatures to rise a degree or two each day by Thursday. 


For the extended part of the forecast later this week...a large 
Pacific trough will move on shore from the Gulf of Alaska bringing a 
cooler and drier air mass down through the Great Basin and into the 
Desert Southwest. Model run to run consistency has been decent with 
operational models in good agreement this far out in the extended. 
Minor differences in timing and strength...but the overall placement 
and timing looks good. Precipitation chances will begin a ramp up starting 
Friday afternoon through early Sunday...so made upward trend changes 
to the forecast at this time. By Sunday though models begin to 
drastically differ...with the GFS taking the trough eastward across 
The Rockies and the European model (ecmwf) keeping the cut off low centered over 
western Nevada with slow forward propagation. These differences 
could mean changes to precipitation for the southwest so confidence is 
pretty low that far out. 


&& 


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


Drier westerly flow aloft will result in mostly clear skies and 
light wind through at least 19z Monday. 


Aviation discussion not updated for amended tafs. 


&& 


Fire weather... 
Wednesday through Sunday... 
moisture retreat due to westerly flow will keep storm chances 
minimal through Thursday and limited to the higher mountains of 
south-central Arizona. Meanwhile...temperatures nudge upward a few 
degrees above normal. Humidities on the lower deserts drop below 15 
percent though maximum humidities remain fair. No strong winds are 
expected during this time frame. On Friday...a Pacific weather 
system will pull moisture northward over the region for a return of 
storm chances into next weekend...mainly east of the lower Colorado 
River valley. In addition...cooler temperatures...higher 
humidities...and breezy to locally windy conditions can be expected 
as well. 


&& 


Psr watches/warnings/advisories... 


Arizona...none. 


California...none. 


&& 


$$ 


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



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