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Cottage Grove weather

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Cottage Grove weather alerts and warnings

active National Weather Service watches, warnings and advisories

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Cottage Grove weather in numbers

from 30 years of measured normals

Cottage Grove swings 67°F across the year, from 81°F highs in July to 14°F lows in January, and June is usually the wettest month in a year that brings about 38 in of precipitation.

Warmest month
July
81°F average high
Coldest month
January
14°F average low
Wettest month
June
38 in a year
Below freezing
5 months
January, February, March, November and December
Comfortable
2 months
May and September
Residents
6,854
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The weather map: all three models at once

NWS, American, European side by side around Cottage Grove and nearby towns.Live rain radar →
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Cottage Grove hourly forecast: next 14 hours

consensus of the three models

Rain in the next 24 hours, model by model

each model's own hourly precipitation, side by side

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Cottage Grove 10-day forecast, out to 14 days

where the models agree, and where they split

Cottage Grove, Wisconsin (WI) is at its warmest in Jul (average highs near 81°F) and coldest in Jan (lows around 14°F), with roughly 38 in of precipitation across the year. Below, compare what NWS, American, European forecast for Cottage Grove right now, and see exactly where they disagree.

We grade every model against the weather that actually happened, so you can see which forecast model is most accurate in United States before you trust any single number.

Cottage Grove climate by month

average daytime high and overnight low across a typical year (1991-2020)
Jan
25°
14°
Feb
34°
14°
Mar
45°
26°
Apr
55°
37°
May
69°
48°
Jun
79°
59°
Jul
81°
63°
Aug
79°
61°
Sep
72°
54°
Oct
58°
42°
Nov
44°
31°
Dec
31°
19°

Source: 1991-2020 averages, ERA5 for this place adjusted with NASA POWER.

How the weather around Cottage Grove has changed since 1995

Cottage Grove sits in the same roughly 50 km square of NASA's reanalysis as Madison. That square shows no clear change in temperature between 1995-2004 and 2015-2024. See the full 30-year picture on the Madison page.

Which forecast is most accurate in the US?

CheckWeather Score, graded against the weather that actually happened
ProviderCheckWeather-scoreTempWindRainRun by
European logo
European ★ Best
93
/100rank #1
91±0.9°F97±1.1 mph9396% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
82
/100rank #2
83±1.7°F94±2.0 mph7184% hitNOAA / NCEP (United States)College Park, Maryland, USA

The CheckWeather Score blends temperature, wind and rain accuracy, each measured against ERA5 (the recorded weather) over the last 30 days across 1999 cities. Lower error means a higher score. See which forecast model is most accurate in United States, how we measure forecast accuracy, or which model each weather app uses.

What do you think of the forecasts?

your vote counts

The accuracy above is the measured record. This is your opinion: which forecast service do you trust most in United States? Give each 1 to 5 stars.

NWSNational Blend (NBM)
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AmericanNOAA GFS
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EuropeanECMWF
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One vote per service. Anonymous: we store no personal data, only a one-way hash of your connection for a day to stop double votes.

Common questions

What's the weather in Cottage Grove today?
On this page we show what NWS, American, European each forecast for Cottage Grove today, side by side and updated live. When all three agree the forecast is reliable; when they split, we flag it so you know the day is genuinely less certain.
Will it rain in Cottage Grove today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Cottage Grove and flag the days where the models disagree on whether showers actually arrive, which is exactly when a single app can catch you out.
Which forecast is most accurate for Cottage Grove?
No single model is always right. NWS, American, European each run their own physics, so we line all three up: when they agree the Cottage Grove forecast is reliable, and when they split you should expect surprises. See our tested US accuracy scoreboard for how the models compare.
What is the warmest month in Cottage Grove?
July is typically the warmest month in Cottage Grove, with average highs around 81°F.
How cold does Cottage Grove get?
The coldest month in Cottage Grove is January, when overnight lows average about 14°F.
How much rain does Cottage Grove get?
Cottage Grove sees roughly 38 in of precipitation a year, with June usually the wettest month.

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