The hottest month in Wahpeton is typically July, with daytime highs averaging around 28.3°C (83°F), based on 10 years of historical weather data. Overnight lows during this period average near 17.8°C (64°F).

What is the coldest month in Wahpeton?

The coldest month in Wahpeton is typically January, with overnight lows averaging around -14.8°C (5°F) and daytime highs near -6°C (21°F), based on 10 years of historical weather data. Freezing overnight temperatures are common during this month, so plan for icy conditions in the early morning.

Does Wahpeton have a rainy season?

Wahpeton doesn't have a sharply defined rainy season rainfall is fairly spread across the year based on 10 years of historical data. August is the wettest month on average (about 109 mm), while January is the driest (about 14 mm).

What's the best time of year to visit Wahpeton?

The best time to visit Wahpeton is typically September, when daytime highs average a comfortable 22.8°C (73°F). Rainfall during this window averages around 64 mm, one of the lighter, more comfortable stretches of the year. This is based on 10 years of historical weather data.

Is Wahpeton's air quality safe right now?

As of the latest reading, Wahpeton's air quality index (AQI) is 25, rated "Good", based on the nearest monitoring station. Air quality is considered satisfactory, with little to no health risk.

Atmospheric Details

Wind

19 km/h

S · Gentle Breeze · Max 33 km/h

Humidity

53 %

Comfortable

UV Index

Moderate

Visibility

16 km

Excellent

Pressure

972 hPa

Low · change likely

Dew Point

15°C

Somewhat humid

Today vs Normal

32°C+8° above normal

The long-term average high for today is 24°C.

18 of the last 28 days with published data ran above normal.

It continues that pattern - today's forecast is also running above normal.

Red = above normal, blue = at or below · last 12 days

Air Quality

Good

Air quality is considered satisfactory, and air pollution poses little or no risk. It’s a good day to be active outside.

Health & Activity Advice

✅ Good for Outdoors

UV index is 4 today — moderate. Sunscreen is worth using for extended time outside, but no special precautions are needed for short trips.

Air quality is considered satisfactory, and air pollution poses little or no risk. It’s a good day to be active outside.

Conditions are comfortable for outdoor activity at most points during the day today.