Harvard weather
Loading live data…
Harvard weather alerts and warnings
active National Weather Service watches, warnings and advisoriesChecking the National Weather Service for active alerts covering Harvard…
Harvard weather in numbers
from 30 years of measured normalsHarvard swings 66°F across the year, from 81°F highs in July to 15°F lows in January, and August is usually the wettest month in a year that brings about 37 in of precipitation.
The weather map: all three models at once
NWS, American, European side by side around Harvard and nearby towns.Live rain radar →Harvard hourly forecast: next 14 hours
consensus of the three modelsRain in the next 24 hours, model by model
each model's own hourly precipitation, side by sideLoading the three models…
Harvard 10-day forecast, out to 14 days
where the models agree, and where they splitHarvard, Illinois (IL) is at its warmest in Jul (average highs near 81°F) and coldest in Jan (lows around 15°F), with roughly 37 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 (1991-2020)Source: 1991-2020 averages, ERA5 for this place adjusted with NASA POWER.
How the weather around Harvard has changed since 1995
Harvard sits in the same roughly 50 km square of NASA's reanalysis as Janesville. That square shows no clear change in temperature between 1995-2004 and 2015-2024. See the full 30-year picture on the Janesville page.
Which forecast is most accurate in the US?
CheckWeather Score, graded against the weather that actually happened
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 countsThe 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.
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.