Marion, IA Weather & Climate Normals
Marion's real weather, in one number
Marion, IA scores 43/100 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.
Marion's hottest and coldest months
Marion's hottest month is Jul, averaging 74°F; its coldest is Jan, averaging 21°F, a 53.1°F swing across the year, one of the widest gaps in this dataset.
Marion's weather across the year
| Month | Avg high | Avg low | Precip | Snow |
|---|---|---|---|---|
| Jan | 30°F | 13°F | 1.17in | 8.7in |
| Feb | 35°F | 17°F | 1.34in | 8.3in |
| Mar | 49°F | 28°F | 2.06in | 4in |
| Apr | 63°F | 38°F | 4.02in | 1.5in |
| May | 74°F | 50°F | 4.74in | 0in |
| Jun | 82°F | 60°F | 5.68in | 0in |
| Jul | 86°F | 63°F | 4.47in | 0in |
| Aug | 83°F | 61°F | 4.42in | 0in |
| Sep | 77°F | 53°F | 3.96in | 0in |
| Oct | 64°F | 42°F | 3in | 0.6in |
| Nov | 48°F | 29°F | 2.22in | 2.2in |
| Dec | 35°F | 19°F | 1.67in | 9in |
May, Jun, Jul, Aug, and Sep are the best time to see Marion at its mildest; the rest of the year, plan around Jan's cold.
Rain and snow in Marion
Marion averages 38.75in of precipitation a year across roughly 118 days with measurable rain or snow, and 34.3in of snow a year.
Where Marion ranks
Marion ranks 3971 of 4876 US cities in this dataset for comfort score, and 30 of 85 within IA. About 42,542 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from Cedar Rapids #1, IA US, 0.4 miles from Marion, 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