Westport, SD

Climate overview — based on NOAA 1991-2020 normals from WESTPORT 2 NW, SD US.

Year-round temperatures (°F)

10° 20° 30° J F M A M J J A S O N D
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Best time to visit Westport

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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
Frost dates
Last spring / first fall frost
All-time records
Hottest, coldest, wettest
Planting calendar
What to plant, and when

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