Clear Lake, IA Weather & Climate Normals
What a normal year in Clear Lake actually looks like
On the 30-year record NOAA keeps for Clear Lake, IA, the comfort score comes out to 41/100, 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 Clear Lake's weather actually swings
Average temperatures in Clear Lake run from 16°F in Jan up to 72°F in Jul, a 55.8°F seasonal swing, one of the widest gaps in this dataset.
Clear Lake, month by month
| Month | Avg high | Avg low | Precip | Snow |
|---|---|---|---|---|
| Jan | 24°F | 7°F | 0.89in | 11.3in |
| Feb | 29°F | 11°F | 1.22in | 10in |
| Mar | 42°F | 24°F | 2.29in | 7in |
| Apr | 58°F | 35°F | 4.15in | 3in |
| May | 70°F | 47°F | 5.15in | 0.3in |
| Jun | 80°F | 57°F | 5.39in | 0in |
| Jul | 83°F | 61°F | 4.43in | 0in |
| Aug | 80°F | 58°F | 3.79in | 0in |
| Sep | 74°F | 49°F | 3.45in | 0in |
| Oct | 60°F | 37°F | 2.53in | 0.4in |
| Nov | 44°F | 24°F | 1.67in | 3in |
| Dec | 30°F | 14°F | 1.29in | 9.4in |
If you're timing a visit, May, Jun, Jul, Aug, and Sep are Clear Lake's mildest stretch; if you're moving there, you should plan around Jan's cold instead.
How wet Clear Lake actually gets
Over a typical year, Clear Lake sees about 36.25in of precipitation a year across roughly 116 days with measurable rain or snow, with 44.4in of snow a year.
Clear Lake against the rest of the country
Out of 4876 cities scored here, Clear Lake comes in at 4452; within IA alone it ranks 66 of 85. Population is about 7,602.
Checking the actual forecast
These figures come from Mason City Muni Ap, IA US, the NOAA station 2.7 miles from Clear Lake, averaged over 30 years, not tomorrow's forecast.
More on how this is worked out
Why this uses the nearest NOAA station · How the comfort score is calculated