Franklin Grove, IL
Climate overview — based on NOAA 1991-2020 normals from AMBOY, IL US.
Year-round temperatures (°F)
Avg high
Avg low
Best time to visit Franklin Grove
Full guide →Monthly averages
| Month | Avg High | Avg Low | Avg Temp | Precipitation | Snow | Rainy days |
|---|---|---|---|---|---|---|
| January | °F | °F | °F | 1.81 in | 9.8 in | 8 |
| February | °F | °F | °F | 1.72 in | 6.9 in | 7 |
| March | °F | °F | °F | 2.40 in | 3.8 in | 8 |
| April | °F | °F | °F | 3.48 in | 0.9 in | 11 |
| May | °F | °F | °F | 4.63 in | — | 13 |
| June | °F | °F | °F | 5.19 in | — | 11 |
| July | °F | °F | °F | 4.25 in | — | 9 |
| August | °F | °F | °F | 4.01 in | — | 10 |
| September | °F | °F | °F | 3.30 in | — | 8 |
| October | °F | °F | °F | 2.75 in | — | 10 |
| November | °F | °F | °F | 2.46 in | 1.0 in | 8 |
| December | °F | °F | °F | 1.95 in | 6.5 in | 8 |
Last spring / first fall frost
All-time recordsHottest, coldest, wettest
Planting calendarWhat to plant, and when