Sullivan, MO Weather & Climate Normals
Sullivan's real weather, in one number
Sullivan, MO scores 48/100 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.
Sullivan's hottest and coldest months
Sullivan's hottest month is Jul, averaging 79°F; its coldest is Jan, averaging 33°F, a 46°F swing across the year, one of the widest gaps in this dataset.
Sullivan's weather across the year
| Month | Avg high | Avg low | Precip | Snow |
|---|---|---|---|---|
| Jan | 43°F | 23°F | 2.72in | 4.7in |
| Feb | 48°F | 26°F | 2.45in | 4.1in |
| Mar | 59°F | 35°F | 3.87in | 1.8in |
| Apr | 70°F | 45°F | 4.99in | 0.2in |
| May | 78°F | 55°F | 4.85in | 0in |
| Jun | 86°F | 63°F | 4.24in | 0in |
| Jul | 91°F | 67°F | 4.74in | 0in |
| Aug | 89°F | 66°F | 3.84in | 0in |
| Sep | 82°F | 57°F | 3.63in | 0in |
| Oct | 70°F | 46°F | 3.31in | 0in |
| Nov | 57°F | 35°F | 3.66in | 0.7in |
| Dec | 46°F | 27°F | 2.66in | 2.9in |
Apr, May, Jun, Sep, and Oct are the best time to see Sullivan at its mildest; the rest of the year, plan around Jul's heat and Jan's cold.
Rain and snow in Sullivan
Sullivan averages 44.96in of precipitation a year across roughly 108 days with measurable rain or snow, and 14.4in of snow a year.
Where Sullivan ranks
Sullivan ranks 2480 of 4876 US cities in this dataset for comfort score, and 52 of 135 within MO. About 6,925 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from Union, MO US, 18.2 miles from Sullivan, not a prediction for any specific day.
More on how this is worked out
What a 30-year climate normal actually is · Why this uses the nearest NOAA station