Troy, IL
Climate overview — based on NOAA 1991-2020 normals from EDWARDSVILLE 2 W, IL US.
Year-round temperatures (°F)
Avg high
Avg low
Best time to visit Troy
Full guide →Climate change signal
All-time records →0 of 304 (0%) of Troy'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.
| 1890s | 33 | |
| 1910s | 0 | |
| 1920s | 0 | |
| 1930s | 0 | |
| 1940s | 0 | |
| 1950s | 0 | |
| 1960s | 0 | |
| 1970s | 0 | |
| 1980s | 271 | |
| 1990s | 0 | |
| 2000s | 0 | |
| 2010s | 0 | |
| 2020s | 0 |
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 | °F | °F | °F | 2.78 in | 3.7 in | 8 |
| February | °F | °F | °F | 2.32 in | 2.5 in | 8 |
| March | °F | °F | °F | 3.45 in | 1.0 in | 11 |
| April | °F | °F | °F | 5.10 in | 0.1 in | 11 |
| May | °F | °F | °F | 5.49 in | — | 13 |
| June | °F | °F | °F | 4.71 in | — | 10 |
| July | °F | °F | °F | 4.76 in | — | 8 |
| August | °F | °F | °F | 4.02 in | — | 9 |
| September | °F | °F | °F | 3.26 in | — | 8 |
| October | °F | °F | °F | 3.41 in | — | 9 |
| November | °F | °F | °F | 3.79 in | 0.2 in | 9 |
| December | °F | °F | °F | 2.76 in | 3.3 in | 8 |
Last spring / first fall frost
All-time recordsHottest, coldest, wettest
Planting calendarWhat to plant, and when