NWS, American, European side by side around Deer Valley and nearby towns.Live rain radar →
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Next 14 hours
consensus of the three models
7-day forecast
where the models agree, and where they split
Deer Valley, AZ is at its warmest in Jul (average highs near 109°F) and coldest in Jan (lows around 42°F), with roughly 11 in of precipitation across the year. Below, compare what NWS, American, European forecast for Deer Valley right now, and see exactly where they disagree.
Deer Valley climate by month
average daytime high and overnight low across a typical year
Jan
61°
42°
Feb
65°
45°
Mar
69°
49°
Apr
84°
58°
May
92°
67°
Jun
102°
76°
Jul
109°
86°
Aug
105°
83°
Sep
100°
76°
Oct
91°
66°
Nov
74°
52°
Dec
70°
47°
Common questions
What's the weather in Deer Valley today?
On this page we show what NWS, American, European each forecast for Deer Valley today, side by side and updated live. When all three agree the forecast is reliable; when they split, we flag it so you know the day is genuinely less certain.
Will it rain in Deer Valley today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Deer Valley and flag the days where the models disagree on whether showers actually arrive, which is exactly when a single app can catch you out.
Which forecast is most accurate for Deer Valley?
No single model is always right. NWS, American, European each run their own physics, so we line all three up: when they agree the Deer Valley forecast is reliable, and when they split you should expect surprises. See our tested US accuracy scoreboard for how the models compare.
What is the warmest month in Deer Valley?
Jul is typically the warmest month in Deer Valley, with average highs around 109°F.
How cold does Deer Valley get?
The coldest month in Deer Valley is Jan, when overnight lows average about 42°F.
How much rain does Deer Valley get?
Deer Valley sees roughly 11 in of precipitation a year, with Jan usually the wettest month.
The forecasts Americans check
The two biggest apps keep their model a secret, so we can't show their numbers, only link you to them. The National Weather Service is public, so its data sits right in the comparison above.