Skip to main content
Every US forecast, compared
checkweather.io
CheckWeather US›Harvard

Harvard weather

Loading live data…

The weather map: all three models at once

NWS, American, European side by side around Harvard and nearby towns.Live rain radar →
Loading the three model maps…

Next 14 hours

consensus of the three models

14-day forecast

where the models agree, and where they split

Harvard, IL is at its warmest in Jul (average highs near 81°F) and coldest in Jan (lows around 20°F), with roughly 36 in of precipitation across the year. Below, compare what NWS, American, European forecast for Harvard 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.

Harvard climate by month

average daytime high and overnight low across a typical year
Jan
31°
20°
Feb
42°
24°
Mar
46°
29°
Apr
58°
39°
May
71°
50°
Jun
80°
60°
Jul
81°
63°
Aug
80°
62°
Sep
76°
58°
Oct
63°
46°
Nov
48°
34°
Dec
38°
26°

Which forecast is most accurate in the US?

CheckWeather Score — graded against the weather that actually happened
ProviderCheckWeather Score🌡 Temp💨 Wind🌧 RainRun by
European logo
European ★ Best
89
/100rank #1
87±1.3°F96±1.2 mph8592% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
73
/100rank #2
81±1.9°F93±2.2 mph4972% 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.

Common questions

What's the weather in Harvard today?
On this page we show what NWS, American, European each forecast for Harvard 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 Harvard today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Harvard 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 Harvard?
No single model is always right. NWS, American, European each run their own physics, so we line all three up: when they agree the Harvard 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 Harvard?
July is typically the warmest month in Harvard, with average highs around 81°F.
How cold does Harvard get?
The coldest month in Harvard is January, when overnight lows average about 20°F.
How much rain does Harvard get?
Harvard sees roughly 36 in of precipitation a year, with April usually the wettest month.

Nearby

WoodstockPoplar GroveMarengoDelavanLake GenevaBelvidereElkhornMcHenry

More US weather

Which forecast is most accurate in United States?US rain radarNWS vs American vs European: models comparedHow we measure forecast accuracyHow accurate is a 7-day forecast?Best time to visit HarvardAll US citiesHoliday weather abroadEmbed Harvard on your siteThe national forecast models, explained: NBM, UKMO, GEM and ACCESS