Harrison, ID
Climate overview — based on NOAA 1991-2020 normals from PLUMMER 3 WSW, ID US.
Year-round temperatures (°F)
Climate summary
Harrison has an annual average temperature of 46.5°F with about 28.5 inches of precipitation per year. The warmest month is August (average high 83.0°F), and the coldest is December (average low 22.8°F). January is typically the wettest month (3.79 in) and July the driest (0.71 in).
Best time to visit Harrison
Full guide →Climate change signal
All-time records →128 of 366 (35%) of Harrison'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.
| 1950s | 0 | |
| 1980s | 18 | |
| 1990s | 131 | |
| 2000s | 56 | |
| 2010s | 130 | |
| 2020s | 31 |
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 | 36.6°F | 23.8°F | 30.2°F | 3.79 in | — | — |
| February | 39.8°F | 24.7°F | 32.3°F | 2.57 in | — | — |
| March | 46.6°F | 29.4°F | 38.0°F | 3.59 in | — | — |
| April | 55.3°F | 33.8°F | 44.5°F | 2.34 in | — | — |
| May | 64.7°F | 40.5°F | 52.6°F | 2.46 in | — | — |
| June | 69.7°F | 44.6°F | 57.1°F | 1.90 in | — | — |
| July | 81.4°F | 51.7°F | 66.5°F | 0.71 in | — | — |
| August | 83.0°F | 50.5°F | 66.7°F | 0.74 in | — | — |
| September | 72.6°F | 44.2°F | 58.4°F | 1.02 in | — | — |
| October | 57.4°F | 35.6°F | 46.5°F | 2.50 in | — | — |
| November | 43.1°F | 29.5°F | 36.3°F | 3.55 in | — | — |
| December | 34.6°F | 22.8°F | 28.7°F | 3.35 in | — | — |
Climate twins of Harrison
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).