Ames, IA

Climate overview — based on NOAA 1991-2020 normals from AMES MUNI AP, IA US.

Dfa Hot-summer humid continental climate 6b USDA hardiness Zone 6b

Year-round temperatures (°F)

10° 30° 50° 70° 90° J F M A M J J A S O N D
Avg high Avg low

Climate summary

Ames has an annual average temperature of 48.6°F with about 35.9 inches of precipitation per year. The warmest month is July (average high 83.9°F), and the coldest is January (average low 10.9°F). June is typically the wettest month (5.22 in) and January the driest (0.61 in).

Pleasant months
1 / 12
avg high 65–80°F, low ≥ 50°F
Annual swing
53.5°F
warmest to coldest month
Heating need
6,519
Cooling need
597

Best time to visit Ames

Full guide →

Climate change signal

All-time records →

157 of 366 (42.9%) of Ames's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.

1990s
35
2000s
109
2010s
120
2020s
102

Bars: number of all-time daily heat records still standing that were set in each decade.

Monthly averages

Month Avg High Avg Low Avg Temp Precipitation Snow Rainy days
January 28.7°F 10.9°F 19.8°F 0.61 in 6
February 33.4°F 15.4°F 24.4°F 0.78 in 6
March 47.1°F 27.0°F 37.0°F 1.95 in 8
April 60.9°F 37.8°F 49.4°F 3.89 in 12
May 71.8°F 49.5°F 60.7°F 5.16 in 14
June 81.3°F 59.8°F 70.6°F 5.22 in 13
July 83.9°F 62.8°F 73.3°F 4.44 in 11
August 81.8°F 60.1°F 71.0°F 4.85 in 12
September 75.9°F 50.9°F 63.4°F 3.31 in 10
October 62.6°F 39.1°F 50.9°F 2.77 in 9
November 46.9°F 26.9°F 36.9°F 1.88 in 6
December 33.9°F 16.5°F 25.2°F 1.05 in 6

Climate twins of Ames

Why these? →

The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).

Frost dates
Last spring / first fall frost
All-time records
Hottest, coldest, wettest
Planting calendar
What to plant, and when

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