Onslow, IA
Climate overview — based on NOAA 1991-2020 normals from MONTICELLO, IA US.
Year-round temperatures (°F)
Avg high
Avg low
Best time to visit Onslow
Full guide →Monthly averages
| Month | Avg High | Avg Low | Avg Temp | Precipitation | Snow | Rainy days |
|---|---|---|---|---|---|---|
| January | °F | °F | °F | 1.29 in | — | — |
| February | °F | °F | °F | 1.46 in | — | — |
| March | °F | °F | °F | 2.17 in | — | — |
| April | °F | °F | °F | 4.09 in | — | — |
| May | °F | °F | °F | 4.42 in | — | — |
| June | °F | °F | °F | 5.57 in | — | — |
| July | °F | °F | °F | 4.55 in | — | — |
| August | °F | °F | °F | 4.53 in | — | — |
| September | °F | °F | °F | 4.41 in | — | — |
| October | °F | °F | °F | 3.15 in | — | — |
| November | °F | °F | °F | 2.22 in | — | — |
| December | °F | °F | °F | 1.68 in | — | — |
Last spring / first fall frost
All-time recordsHottest, coldest, wettest
Planting calendarWhat to plant, and when