Riley, IN
Climate overview — based on NOAA 1991-2020 normals from TERRE HAUTE HULMAN RGNL AP, IN US.
Year-round temperatures (°F)
Climate summary
Riley has an annual average temperature of 53.5°F with about 40.8 inches of precipitation per year. The warmest month is July (average high 85.9°F), and the coldest is January (average low 20.7°F). April is typically the wettest month (4.71 in) and February the driest (2.02 in).
Best time to visit Riley
Full guide →Climate change signal
All-time records →134 of 366 (36.6%) of Riley'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 | 9 | |
| 1990s | 33 | |
| 2000s | 89 | |
| 2010s | 149 | |
| 2020s | 86 |
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 | 36.7°F | 20.7°F | 28.7°F | 2.60 in | — | 9 |
| February | 41.6°F | 24.1°F | 32.9°F | 2.02 in | — | 9 |
| March | 52.8°F | 32.8°F | 42.8°F | 2.92 in | — | 11 |
| April | 64.9°F | 42.9°F | 53.9°F | 4.71 in | — | 11 |
| May | 74.6°F | 53.4°F | 64.0°F | 4.71 in | — | 13 |
| June | 83.3°F | 62.2°F | 72.7°F | 4.64 in | — | 12 |
| July | 85.9°F | 64.8°F | 75.3°F | 4.34 in | — | 11 |
| August | 84.6°F | 62.5°F | 73.6°F | 2.99 in | — | 10 |
| September | 79.0°F | 54.2°F | 66.6°F | 2.93 in | — | 9 |
| October | 66.7°F | 43.0°F | 54.9°F | 3.44 in | — | 9 |
| November | 52.6°F | 33.7°F | 43.1°F | 3.05 in | — | 9 |
| December | 41.1°F | 25.9°F | 33.5°F | 2.49 in | — | 10 |
Climate twins of Riley
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).