Coralville, IA

Climate overview — based on NOAA 1991-2020 normals from IOWA CITY 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

Coralville has an annual average temperature of 51°F with about 35.7 inches of precipitation per year. The warmest month is July (average high 85.8°F), and the coldest is January (average low 14.6°F). June is typically the wettest month (5.29 in) and January the driest (1.04 in).

Pleasant months
2 / 12
avg high 65–80°F, low ≥ 50°F
Annual swing
53°F
warmest to coldest month
Heating need
5,868
Cooling need
825

Best time to visit Coralville

Full guide →

Climate change signal

All-time records →

125 of 366 (34.2%) of Coralville'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.

1940s
15
1950s
31
1990s
34
2000s
104
2010s
102
2020s
80

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 30.9°F 14.6°F 22.8°F 1.04 in 6
February 35.5°F 18.5°F 27.0°F 1.21 in 8
March 49.5°F 29.5°F 39.5°F 2.21 in 9
April 62.6°F 40.1°F 51.4°F 3.76 in 11
May 73.4°F 51.7°F 62.6°F 4.48 in 13
June 82.6°F 62.1°F 72.4°F 5.29 in 12
July 85.8°F 65.8°F 75.8°F 3.91 in 9
August 83.8°F 63.3°F 73.5°F 3.94 in 10
September 77.5°F 54.2°F 65.8°F 3.24 in 10
October 64.1°F 42.1°F 53.1°F 2.98 in 10
November 49.2°F 30.4°F 39.8°F 2.17 in 8
December 36.3°F 20.1°F 28.2°F 1.45 in 8

Climate twins of Coralville

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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