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Weather & Climate

Middletown, California, United States

Overview

Climate data and monthly weather averages for Middletown.

Key Metrics

Annual Avg
15.3°C
Summer Avg
24.8°C
Winter Avg
6.9°C
Record High
46.2°C
Record Low
-5.4°C
Annual Precipitation
727.6 mm
Avg Humidity
60%
Summer Humidity
37%
Winter Humidity
82%

Monthly Averages

MonthHigh (°C)Avg (°C)Low (°C)Rain (mm)Humidity (%)Sunshine (h)Wind (kph)
Jan22.8°6.6°-4.4°126.283%7248.7
Feb23.3°7.7°-3.7°127.781%9241
Mar25°9.8°-3.2°101.479%14140.3
Apr31.4°12.1°-2.3°48.373%18337.7
May39°16.9°1.5°25.462%22638.7
Jun43.3°22.4°4.8°7.245%24437.2
Jul46.2°26.6°9.7°1.233%24828.8
Aug43.9°25.5°10.1°0.933%22029.6
Sep43.4°22.7°5.8°3.935%17536.3
Oct38.8°16.9°1.7°36.647%12941.8
Nov30.2°10.3°-3.9°78.368%8340.3
Dec21.1°6.5°-5.4°170.581%6249.4

Frequently Asked Questions

Sources: NASA POWER · Last updated: 2025

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