St. Johns, MI Weather & Climate Normals
St. Johns's real weather, in one number
St. Johns, MI scores 49/100 on this site's reading of NOAA's own 30-year normals: strongly seasonal. Comfortable weather is limited to a shorter window; summers, winters, or precipitation swing wide. 5 of the year's 12 months average between 55 and 75°F, the range this site counts as mild.
St. Johns's hottest and coldest months
St. Johns's hottest month is Jul, averaging 73°F; its coldest is Jan, averaging 24°F, a 48.6°F swing across the year, one of the widest gaps in this dataset.
St. Johns's weather across the year
| Month | Avg high | Avg low | Precip |
|---|---|---|---|
| Jan | 31°F | 18°F | 2.07in |
| Feb | 33°F | 19°F | 1.8in |
| Mar | 44°F | 26°F | 1.93in |
| Apr | 57°F | 36°F | 3.58in |
| May | 69°F | 48°F | 3.83in |
| Jun | 79°F | 59°F | 3.35in |
| Jul | 83°F | 62°F | 3.2in |
| Aug | 81°F | 61°F | 3.46in |
| Sep | 75°F | 53°F | 2.87in |
| Oct | 62°F | 43°F | 3.25in |
| Nov | 47°F | 33°F | 2.84in |
| Dec | 36°F | 24°F | 1.82in |
May, Jun, Jul, Aug, and Sep are the best time to see St. Johns at its mildest; the rest of the year, plan around Jan's cold.
Rain and snow in St. Johns
Over a typical year, St. Johns sees about 34in of precipitation a year across roughly 129 days with measurable rain or snow. That station has no snowfall reading, so none is shown rather than assumed.
Where St. Johns ranks
St. Johns ranks 2219 of 4876 US cities in this dataset for comfort score, and 38 of 153 within MI. About 7,723 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from Saint Johns, MI US, 0.8 miles from St. Johns, not a prediction for any specific day.
More on how this is worked out
Why some cities show no snow or rain figure · How the comfort score is calculated