Leon, IA

Climate overview — based on NOAA 1991-2020 normals from LEON 6 ESE, 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

Leon has an annual average temperature of 49.6°F with about 39.3 inches of precipitation per year and 28.5 inches of snow. The warmest month is July (average high 85.5°F), and the coldest is January (average low 12.6°F). June is typically the wettest month (5.56 in) and January the driest (0.90 in). Snow typically falls from October through March.

Pleasant months
1 / 12
avg high 65–80°F, low ≥ 50°F
Annual swing
51.6°F
warmest to coldest month
Heating need
6,174
Cooling need
627

Best time to visit Leon

Full guide →

Climate change signal

All-time records →

0 of 366 (0%) of Leon'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.

1960s
56
1970s
45
1980s
131
1990s
49
2000s
55
2010s
30

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 32.7°F 12.6°F 22.6°F 0.90 in 8.0 in 6
February 37.6°F 15.7°F 26.7°F 1.51 in 6.0 in 7
March 50.4°F 27.0°F 38.7°F 2.29 in 4.9 in 9
April 62.5°F 36.8°F 49.6°F 3.80 in 0.1 in 12
May 71.9°F 48.3°F 60.1°F 5.54 in 14
June 80.8°F 58.5°F 69.7°F 5.56 in 13
July 85.5°F 62.8°F 74.2°F 4.43 in 11
August 83.6°F 60.5°F 72.0°F 4.54 in 10
September 76.0°F 50.4°F 63.2°F 4.17 in 8
October 64.2°F 38.9°F 51.6°F 3.17 in 0.2 in 9
November 49.8°F 27.9°F 38.9°F 2.07 in 1.5 in 7
December 37.7°F 17.8°F 27.8°F 1.35 in 7.8 in 7

Climate twins of Leon

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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