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Spearfish weather

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The weather map: all three models at once

NWS, American, European side by side around Spearfish and nearby towns.Live rain radar →
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Next 14 hours

consensus of the three models

14-day forecast

where the models agree, and where they split

Spearfish, SD is at its warmest in Jul (average highs near 84°F) and coldest in Jan (lows around 19°F), with roughly 21 in of precipitation across the year. Below, compare what NWS, American, European forecast for Spearfish right now, and see exactly where they disagree.

We grade every model against the weather that actually happened, so you can see which forecast model is most accurate in United States before you trust any single number.

Spearfish climate by month

average daytime high and overnight low across a typical year
Jan
34°
19°
Feb
41°
23°
Mar
42°
22°
Apr
55°
34°
May
67°
46°
Jun
76°
55°
Jul
84°
60°
Aug
82°
61°
Sep
79°
55°
Oct
61°
40°
Nov
47°
30°
Dec
43°
27°

Which forecast is most accurate in the US?

CheckWeather Score — graded against the weather that actually happened
ProviderCheckWeather Score🌡 Temp💨 Wind🌧 RainRun by
European logo
European ★ Best
89
/100rank #1
87±1.3°F96±1.2 mph8592% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
73
/100rank #2
81±1.9°F93±2.2 mph4972% hitNOAA / NCEP (United States)College Park, Maryland, USA

The CheckWeather Score blends temperature, wind and rain accuracy — each measured against ERA5 (the recorded weather) over the last 30 days across 1999 cities. Lower error means a higher score. See which forecast model is most accurate in United States, how we measure forecast accuracy, or which model each weather app uses.

Common questions

What's the weather in Spearfish today?
On this page we show what NWS, American, European each forecast for Spearfish today, side by side and updated live. When all three agree the forecast is reliable; when they split, we flag it so you know the day is genuinely less certain.
Will it rain in Spearfish today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Spearfish and flag the days where the models disagree on whether showers actually arrive, which is exactly when a single app can catch you out.
Which forecast is most accurate for Spearfish?
No single model is always right. NWS, American, European each run their own physics, so we line all three up: when they agree the Spearfish forecast is reliable, and when they split you should expect surprises. See our tested US accuracy scoreboard for how the models compare.
What is the warmest month in Spearfish?
July is typically the warmest month in Spearfish, with average highs around 84°F.
How cold does Spearfish get?
The coldest month in Spearfish is January, when overnight lows average about 19°F.
How much rain does Spearfish get?
Spearfish sees roughly 21 in of precipitation a year, with May usually the wettest month.

Nearby

Belle FourcheSturgisRapid CityEllsworth Air Force BaseRapid ValleyBox ElderGilletteChadron

More US weather

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