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Weather & Climate

Slope County, North Dakota, United States

Overview

Climate data and monthly weather averages for Slope County.

Key Metrics

Annual Avg
7.6°C
Summer Avg
21.4°C
Winter Avg
-5.5°C
Record High
42.6°C
Record Low
-30°C
Annual Precipitation
411.7 mm
Avg Humidity
63%
Summer Humidity
52%
Winter Humidity
77%

Monthly Averages

MonthHigh (°C)Avg (°C)Low (°C)Rain (mm)Humidity (%)Sunshine (h)Wind (kph)
Jan14.8°-5.9°-28.8°9.378%5567.9
Feb19.5°-5.5°-27.3°10.674%7877.5
Mar26.7°0.8°-25.9°21.465%11869.4
Apr31.3°6.3°-15.9°38.160%14868.2
May35.5°12.6°-5.4°72.958%18273.6
Jun41.8°18.8°1.3°68.756%20060.7
Jul42.6°23.6°8.3°51.850%21660
Aug41.3°21.8°5.8°42.850%17963.2
Sep37.4°15.8°-1.8°4554%13159.1
Oct33.3°-15.9°29.863%8866.1
Nov23.6°0.5°-21.1°10.569%5472.9
Dec15.3°-5.1°-30°10.878%4161.8

Frequently Asked Questions

Sources: NASA POWER · Last updated: 2025

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