Altoona, IA Weather & Climate Normals
Altoona's real weather, in one number
Altoona, IA scores 39/100 on this site's reading of NOAA's own 30-year normals: weather-driven. Heat, cold, snow, or rainfall here are heavy enough that they shape daily life for a large part of the year. 4 of the year's 12 months average between 55 and 75°F, the range this site counts as mild.
Altoona's hottest and coldest months
Altoona's hottest month is Jul, averaging 75°F; its coldest is Jan, averaging 21°F, a 54.6°F swing across the year, one of the widest gaps in this dataset.
Altoona's weather across the year
| Month | Avg high | Avg low | Precip | Snow |
|---|---|---|---|---|
| Jan | 30°F | 12°F | 0.97in | 6.2in |
| Feb | 34°F | 16°F | 0.99in | 8in |
| Mar | 47°F | 27°F | 2.01in | 3.7in |
| Apr | 61°F | 38°F | 4in | 0.7in |
| May | 72°F | 50°F | 5.26in | 0in |
| Jun | 82°F | 61°F | 5.37in | 0in |
| Jul | 86°F | 65°F | 4.19in | 0in |
| Aug | 84°F | 62°F | 4.72in | 0in |
| Sep | 77°F | 53°F | 3.62in | 0in |
| Oct | 64°F | 41°F | 2.67in | 0.6in |
| Nov | 48°F | 29°F | 1.86in | 1in |
| Dec | 35°F | 18°F | 1.39in | 4.5in |
May, Jun, Aug, and Sep are the best time to see Altoona at its mildest; the rest of the year, plan around Jul's heat and Jan's cold.
Rain and snow in Altoona
Altoona averages 37.05in of precipitation a year across roughly 102 days with measurable rain or snow, and 24.7in of snow a year.
Where Altoona ranks
Altoona ranks 4624 of 4876 US cities in this dataset for comfort score, and 72 of 85 within IA. About 22,598 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from Ankeny, IA US, 10.4 miles from Altoona, 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