Granger, IA

Climate overview — based on NOAA 1991-2020 normals from DES MOINES WSFO-JOHNSTON, 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

Granger has an annual average temperature of 50.3°F with about 36.2 inches of precipitation per year and 38 inches of snow. The warmest month is July (average high 84.7°F), and the coldest is January (average low 13.1°F). June is typically the wettest month (5.35 in) and January the driest (1.01 in). Snow typically falls from October through May.

Pleasant months
2 / 12
avg high 65–80°F, low ≥ 50°F
Annual swing
53.7°F
warmest to coldest month
Heating need
6,069
Cooling need
765

Best time to visit Granger

Full guide →

Climate change signal

All-time records →

138 of 366 (37.7%) of Granger'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
43
2000s
127
2010s
108
2020s
88

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 30.0°F 13.1°F 21.5°F 1.01 in 9.7 in 8
February 35.1°F 17.3°F 26.2°F 1.25 in 10.5 in 8
March 48.6°F 28.8°F 38.7°F 2.15 in 5.0 in 9
April 61.5°F 40.1°F 50.8°F 4.00 in 1.6 in 11
May 71.8°F 51.8°F 61.8°F 4.84 in 0.2 in 13
June 80.9°F 62.0°F 71.5°F 5.35 in 12
July 84.7°F 65.6°F 75.2°F 4.27 in 9
August 82.9°F 63.6°F 73.2°F 3.97 in 10
September 76.2°F 55.1°F 65.6°F 3.40 in 8
October 63.1°F 42.5°F 52.8°F 2.51 in 0.5 in 9
November 47.7°F 29.9°F 38.8°F 1.95 in 2.2 in 7
December 35.2°F 19.0°F 27.1°F 1.46 in 8.3 in 8

Climate twins of Granger

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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