Climate · Wahpeton

Wahpeton, IA climate

Wahpeton has cold, snowy winters and pleasant summers. A typical July afternoon reaches 83°, a January night drops to 7°, and about 38 inches of snow falls in a normal winter.

NOAA 1991-2020 climate normals Updated once a decade
July high
83°
230th coolest of 1,026 Iowa towns
January low
7°
41st coldest of 1,026 Iowa towns
Rain + melted snow
30 in
48th driest of 1,026 Iowa towns
Snow a winter
38 in
186th snowiest of 1,020 Iowa towns
A normal year

What a year in Wahpeton feels like

Winter

27° / 10°
Typical high / low · 12 days with an inch or more of snow

Spring

56° / 35°
Typical high / low · Last frost around May 1

Summer

81° / 60°
Typical high / low · 10 days reach 90° in a normal year

Fall

59° / 37°
Typical high / low · First frost around Oct 6
Best months to be outsideMayJunJulAugSepHighs of 62–84° and lows of 40° or more
Month by month

Wahpeton weather by month

Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.

MonthHighLowRain + meltSnowWet daysSnow on ground30-yr range
January24°7°0.7" 8.7"723 4° – 28°
February29°11°0.8" 9.3"723 9° – 31°
March42°23°1.6" 5.3"611 25° – 49°
April57°35°3.3" 2.5"82 35° – 53°
May70°47°4.2" 0.1"110 52° – 65°
June79°58°4.8" 090 64° – 73°
July83°62°3.6" 080 65° – 78°
August80°59°3.7" 080 64° – 74°
September74°50°3.2" 070 55° – 67°
October60°38°2.3" 0.5"60 42° – 54°
November43°24°1.4" 3.0"65 24° – 45°
December29°13°0.9" 8.6"618 6° – 28°
Year56°36°30.3"38.0"8881

“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.

Rain & snow

Rain and snow in Wahpeton

Wahpeton gets 30 inches of rain and melted snow a year. June is the wettest month and January the driest. Rain or snow falls on about 88 days a year. Snow covers the ground about 81 days of the year.

30 in
Rain + melted snow a year
Less rain than 75% of U.S. towns
38 in
Snow in a normal winter
More snow than 67% of U.S. towns
81 days
With 1"+ of snow on the ground
More than 82% of U.S. towns

Rain + melted snow by month

Inches of water
4.8"

Snowfall by month

Inches of snow
9.3"
Frost & the growing season

About 158 frost-free days a year

In half of years the last 32° night comes by May 1 and the first one by October 6. That leaves about 158 frost-free days for gardens, shorter than 73% of U.S. towns.

159
nights at or below 32° in a normal year
25
nights below 0° in a normal year
10
days that reach 90° in a normal year

Freezing nights by month

Average nights at or below 32°

90° days by month

Average days at 90° or more
Heating & cooling

Heating and cooling a home in Wahpeton

Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Wahpeton, 92% of that work is heating and 8% is cooling, so the furnace matters far more than the air conditioner.

92%heating
7,569 heating degree daysMore heating than 81% of U.S. towns
684 cooling degree daysLess cooling than 62% of U.S. towns

Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.

Around Wahpeton

Wahpeton and its neighbors

Wahpeton borders 1 town with climate data. January nights across them vary by 0.0°. West Okoboji has both the coldest January nights (7°) and the hottest July afternoons (83°). Wahpeton’s January low is 7° and its July high 83°.

Milford: January low 7°, July high 83°Arnolds Park: January low 7°, July high 83°West Okoboji: January low 7°, July high 83°Wahpeton: January low 7°, July high 83° WahpetonWest Okoboji
ColderMilder7° to 7°
Wahpeton6.9°
West Okoboji6.9° same

Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.

Compared with other towns

How Wahpeton compares

Summer heat83° July high
Cooler than 67% of U.S. towns230th coolest of 1,026 Iowa towns
Winter cold7° January low
Colder than 86% of U.S. towns41st coldest of 1,026 Iowa towns
Precipitation30" a year
Drier than 75% of U.S. towns48th driest of 1,026 Iowa towns
Snow38" a winter
Snowier than 67% of U.S. towns186th snowiest of 1,020 Iowa towns
Growing season158 frost-free days
Shorter than 73% of U.S. towns219th shortest of 1,026 Iowa towns

Compared with every U.S. town and city on TownTapestry, each counted once.

Then and now

Warmer than it used to be

+1.0°1991–2020 average vs. the 20th century (1901–2000)

The last 30 years in Wahpeton averaged 1.0° warmer than the 1900s. The biggest change is in January (+2.3°). The shift is smaller than in 66% of U.S. towns.

❄️ Winter+2.0° now 19°, was 17°
🌷 Spring+0.8° now 46°, was 45°
☀️ Summer+0.5° now 70°, was 70°
🍂 Fall+0.9° now 48°, was 47°

Change by month1991–2020 average minus 1901–2000 average, at Wahpeton’s spot on NOAA’s grid

Year to year

How much a month can swing

A normal is an average, and real years wander around it. January swings the most: between 1991 and 2020 its average temperature ranged from 4° to 28°. June is the most reliable, staying within 9°.

Coldest to warmest month in 30 yearsNormal
Questions

Common questions about Wahpeton’s climate

What is the coldest month in Wahpeton?

January, with a typical high of 24° and a low of 7°.

What is the hottest month in Wahpeton?

July, with a typical high of 83° and a low of 62°. About 10 days a year reach 90°.

How much snow does Wahpeton get?

About 38 inches in a normal winter, most of it in February.

When is the first frost in Wahpeton?

In half of years the first 32° night comes by October 6, and the last spring frost by May 1.

What is the rainiest month in Wahpeton?

June, with 4.8 inches of rain and melted snow. The year totals 30 inches.

Temperatures and rainfall come from NOAA’s gridded climate normals for Wahpeton itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Milford 4 Nw, IA (1 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.

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