Readlyn, IA

Climate overview — based on NOAA 1991-2020 normals from TRIPOLI, IA US.

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

Year-round temperatures (°F)

20° 40° 60° 80° J F M A M J J A S O N D
Avg high Avg low

Climate summary

Readlyn has an annual average temperature of 46.4°F with about 38.6 inches of precipitation per year. The warmest month is July (average high 82.8°F), and the coldest is January (average low 7.3°F). June is typically the wettest month (6.03 in) and February the driest (1.09 in).

Pleasant months
2 / 12
avg high 65–80°F, low ≥ 50°F
Annual swing
56.1°F
warmest to coldest month
Heating need
7,200
Cooling need
486

Best time to visit Readlyn

Full guide →

Climate change signal

All-time records →

40 of 366 (10.9%) of Readlyn'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
34
1950s
62
1960s
37
1970s
25
1980s
45
1990s
39
2000s
43
2010s
72
2020s
9

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 24.8°F 7.3°F 16.1°F 1.23 in 7
February 29.2°F 11.5°F 20.3°F 1.09 in 7
March 42.8°F 24.0°F 33.4°F 2.00 in 8
April 57.6°F 35.6°F 46.6°F 3.93 in 11
May 70.0°F 47.9°F 58.9°F 5.11 in 12
June 79.6°F 58.6°F 69.1°F 6.03 in 12
July 82.8°F 61.6°F 72.2°F 4.80 in 9
August 80.9°F 59.0°F 69.9°F 4.29 in 9
September 74.5°F 50.3°F 62.4°F 3.75 in 9
October 61.0°F 38.2°F 49.6°F 2.96 in 9
November 44.3°F 25.6°F 35.0°F 1.98 in 7
December 30.9°F 14.6°F 22.7°F 1.47 in 7

Climate twins of Readlyn

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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