Jerome, ID

Climate overview — based on NOAA 1991-2020 normals from JEROME, ID US.

BSk Semi-arid (cold) climate 7b USDA hardiness Zone 7b

Year-round temperatures (°F)

20° 40° 60° 80° 100° J F M A M J J A S O N D
Avg high Avg low

Climate summary

Jerome has an annual average temperature of 50.1°F with about 10.5 inches of precipitation per year. The warmest month is July (average high 90.1°F), and the coldest is January (average low 21.8°F). December is typically the wettest month (1.50 in) and July the driest (0.13 in).

Pleasant months
1 / 12
avg high 65–80°F, low ≥ 50°F
Annual swing
46.1°F
warmest to coldest month
Heating need
5,907
Cooling need
546

Best time to visit Jerome

Full guide →

Climate change signal

All-time records →

21 of 366 (5.7%) of Jerome'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.

1910s
15
1920s
33
1930s
57
1940s
23
1950s
30
1960s
25
1970s
18
1980s
28
1990s
43
2000s
59
2010s
21
2020s
14

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 35.5°F 21.8°F 28.7°F 1.38 in 9
February 41.3°F 24.8°F 33.0°F 0.82 in 6
March 51.8°F 30.6°F 41.2°F 1.07 in 7
April 59.8°F 35.8°F 47.8°F 1.02 in 7
May 69.6°F 44.4°F 57.0°F 1.32 in 7
June 79.2°F 51.9°F 65.6°F 0.61 in 5
July 90.1°F 59.4°F 74.8°F 0.13 in 2
August 88.6°F 57.1°F 72.8°F 0.25 in 2
September 78.0°F 48.4°F 63.2°F 0.43 in 3
October 63.2°F 37.8°F 50.5°F 0.89 in 5
November 47.3°F 28.3°F 37.8°F 1.03 in 7
December 35.5°F 22.2°F 28.9°F 1.50 in 8

Climate twins of Jerome

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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