Spearfish, SD Weather & Climate Normals
Spearfish's real weather, in one number
Spearfish, SD scores 46/100 on this site's reading of NOAA's own 30-year normals: strongly seasonal. Comfortable weather is limited to a shorter window; summers, winters, or precipitation swing wide. 4 of the year's 12 months average between 55 and 75°F, the range this site counts as mild.
Spearfish's hottest and coldest months
Spearfish's hottest month is Jul, averaging 69°F; its coldest is Jan, averaging 26°F, a 43.2°F swing across the year, a middling gap by national standards.
Rain and snow in Spearfish
Rain and snow totals are both unavailable at Spearfish's nearest NOAA station, so neither figure is shown here rather than assumed.
Where Spearfish ranks
Spearfish ranks 3047 of 4876 US cities in this dataset for comfort score, and 4 of 18 within SD. About 13,803 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from DEADWOOD, SD US, 9.2 miles from Spearfish, not a prediction for any specific day.
More on how this is worked out
Why some cities show no snow or rain figure · What a 30-year climate normal actually is