Westport, SD
Climate overview — based on NOAA 1991-2020 normals from WESTPORT 2 NW, SD US.
Year-round temperatures (°F)
Avg high
Avg low
Best time to visit Westport
Full guide →Monthly averages
| Month | Avg High | Avg Low | Avg Temp | Precipitation | Snow | Rainy days |
|---|---|---|---|---|---|---|
| January | °F | °F | °F | 0.29 in | 7.2 in | 3 |
| February | °F | °F | °F | 0.47 in | 9.6 in | 4 |
| March | °F | °F | °F | 0.93 in | 5.7 in | 4 |
| April | °F | °F | °F | 1.79 in | 4.9 in | 6 |
| May | °F | °F | °F | 3.29 in | — | 9 |
| June | °F | °F | °F | 3.80 in | — | 10 |
| July | °F | °F | °F | 3.01 in | — | 9 |
| August | °F | °F | °F | 2.67 in | — | 8 |
| September | °F | °F | °F | 2.47 in | — | 7 |
| October | °F | °F | °F | 1.95 in | 1.6 in | 6 |
| November | °F | °F | °F | 0.49 in | 5.1 in | 3 |
| December | °F | °F | °F | 0.56 in | 10.2 in | 4 |
Last spring / first fall frost
All-time recordsHottest, coldest, wettest
Planting calendarWhat to plant, and when