Monticello, WI
Climate overview — based on NOAA 1991-2020 normals from MONROE WWTP, WI US.
Year-round temperatures (°F)
Climate summary
Monticello has an annual average temperature of 47.3°F with about 39.7 inches of precipitation per year and 41.5 inches of snow. The warmest month is July (average high 82.5°F), and the coldest is January (average low 10.9°F). June is typically the wettest month (6.18 in) and January the driest (1.55 in). Snow typically falls from October through May.
Best time to visit Monticello
Full guide →Climate change signal
All-time records →128 of 366 (35%) of Monticello'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 | 0 | |
| 1950s | 0 | |
| 1960s | 2 | |
| 1970s | 2 | |
| 1980s | 0 | |
| 1990s | 0 | |
| 2000s | 128 | |
| 2010s | 147 | |
| 2020s | 87 |
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 | 26.7°F | 10.9°F | 18.8°F | 1.55 in | 11.8 in | 9 |
| February | 31.0°F | 14.4°F | 22.7°F | 1.69 in | 10.5 in | 8 |
| March | 43.5°F | 25.2°F | 34.3°F | 2.12 in | 4.7 in | 9 |
| April | 57.1°F | 36.8°F | 47.0°F | 3.82 in | 1.4 in | 11 |
| May | 69.6°F | 48.5°F | 59.0°F | 4.07 in | 0.3 in | 12 |
| June | 79.4°F | 59.2°F | 69.3°F | 6.18 in | — | 12 |
| July | 82.5°F | 62.6°F | 72.6°F | 4.15 in | — | 10 |
| August | 80.1°F | 60.6°F | 70.4°F | 4.46 in | — | 10 |
| September | 72.7°F | 52.0°F | 62.3°F | 4.15 in | — | 9 |
| October | 59.3°F | 40.2°F | 49.7°F | 3.24 in | 0.4 in | 10 |
| November | 44.7°F | 28.5°F | 36.6°F | 2.39 in | 1.8 in | 8 |
| December | 31.7°F | 17.7°F | 24.7°F | 1.91 in | 10.6 in | 9 |
Climate twins of Monticello
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).