Delavan, WI Weather & Climate Normals
What a normal year in Delavan actually looks like
On the 30-year record NOAA keeps for Delavan, WI, the comfort score comes out to 48/100, strongly seasonal: Comfortable weather is limited to a shorter window; summers, winters, or precipitation swing wide. Only 5 months a year land in the 55–75°F range this site treats as mild.
How much Delavan's weather actually swings
Average temperatures in Delavan run from 21°F in Jan up to 72°F in Jul, a 50.6°F seasonal swing, one of the widest gaps in this dataset.
Delavan, month by month
| Month | Avg high | Avg low | Precip |
|---|---|---|---|
| Jan | 29°F | 13°F | 1.56in |
| Feb | 33°F | 16°F | 1.67in |
| Mar | 44°F | 25°F | 1.97in |
| Apr | 57°F | 36°F | 3.66in |
| May | 69°F | 47°F | 4.19in |
| Jun | 79°F | 57°F | 4.96in |
| Jul | 83°F | 61°F | 3.79in |
| Aug | 81°F | 59°F | 3.87in |
| Sep | 74°F | 51°F | 3.74in |
| Oct | 61°F | 40°F | 2.89in |
| Nov | 46°F | 29°F | 2.61in |
| Dec | 35°F | 20°F | 1.83in |
If you're timing a visit, May, Jun, Jul, Aug, and Sep are Delavan's mildest stretch; if you're moving there, you should plan around Jan's cold instead.
How wet Delavan actually gets
Delavan averages 36.74in of precipitation a year across roughly 0 days with measurable rain or snow; the nearest NOAA station does not record snowfall, so no snow figure is shown rather than guessed.
Delavan against the rest of the country
Out of 4876 cities scored here, Delavan comes in at 2439; within WI alone it ranks 29 of 157. Population is about 9,055.
Checking the actual forecast
These figures come from Delavan Wwtp, WI US, the NOAA station 1.6 miles from Delavan, averaged over 30 years, not tomorrow's forecast.
More on how this is worked out
Why some cities show no snow or rain figure · What a 30-year climate normal actually is