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Weather & Climate

Upland, California, United States

Overview

Climate data and monthly weather averages for Upland.

Key Metrics

Annual Avg
17.4°C
Summer Avg
24.4°C
Winter Avg
10.5°C
Record High
45.3°C
Record Low
-4.3°C
Annual Precipitation
289 mm
Avg Humidity
50%
Summer Humidity
42%
Winter Humidity
56%

Monthly Averages

MonthHigh (°C)Avg (°C)Low (°C)Rain (mm)Humidity (%)Sunshine (h)Wind (kph)
Jan30°10.5°-4.3°5855%10157.3
Feb30.9°10.9°-3°62.459%11850.7
Mar32.6°13.2°-1.3°32.259%17541.6
Apr35.7°15°18.357%20742
May39.5°18.1°4.1°7.455%24138.2
Jun44.8°21.9°6.6°0.647%25236.5
Jul44.5°25.5°10.4°541%24425.5
Aug43°25.8°10.8°3.438%22926
Sep45.3°24.2°7.8°4.540%18931.2
Oct39.9°19.3°3.8°15.545%15245.2
Nov33.5°14.3°-1°23.747%11046.3
Dec28.3°10°-2.8°5855%9142.8

Frequently Asked Questions

Sources: NASA POWER · Last updated: 2025

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