Live Weather & Forecast

Weather in Spearfish

South Dakota, United States · Real-time conditions & 3-day outlook

Flag of United States
Sunny
5°C
Feels like 1°C
41°F / Feels 34°F
Sunny
Spearfish, South Dakota
🌞 Daytime
Updated: 2026-04-13 07:15
💧
Humidity
93%
💨
Wind
20.2 km/h SW
🌬️
Wind Gust
38.3 km/h
🌡️
Pressure
1007 mb
👁️
Visibility
16 km
☀️
UV Index
0.2 (Low)
🌧️
Precipitation
0 mm
☁️
Cloud Cover
0%
💦
Dew Point
1.3°C
🌐
Wind Degree
216°

Air Quality Index

US EPA: Good UK DEFRA: Low (1)
CO
125.9 μg/m³
NO₂
1.3 μg/m³
O₃
124 μg/m³
SO₂
1.3 μg/m³
PM 2.5
4.2 μg/m³
PM 10
11.1 μg/m³

Weather Alerts 2

Met · Severe · Expected
Red Flag Warning issued April 12 at 12:12PM MDT until April 13 at 9:00PM MDT by NWS Rapid City SD

...CRITICAL FIRE WEATHER CONDITIONS THROUGH MONDAY ACROSS PORTIONS OF NORTHEASTERN WYOMING AND WESTERN SOUTH DAKOTA... .Warm, very dry, and breezy weather will support critical fire weather conditions over portions of northeastern Wyoming and western South Dakota this afternoon and again Monday afternoon. * AFFECTED AREA...Fire Weather Zones 315 Southern Campbell, 317 Weston County Plains, 320 C...

A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior.

Effective: 2026-04-12T12:12:00-06:00  ·  Expires: 2026-04-13T03:15:00-06:00
Met · Severe · Expected
Red Flag Warning issued April 13 at 2:29AM MDT until April 13 at 9:00PM MDT by NWS Rapid City SD

...CRITICAL FIRE WEATHER CONDITIONS THROUGH THIS EVENING ACROSS PORTIONS OF NORTHEASTERN WYOMING AND WESTERN SOUTH DAKOTA... .Warm, very dry, and windy weather will support critical fire weather conditions over portions of northeastern Wyoming and western South Dakota through this evening. * AFFECTED AREA...Fire Weather Zones 315 Southern Campbell, 317 Weston County Plains, 320 Central Black Hil...

A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior.

Effective: 2026-04-13T02:29:00-06:00  ·  Expires: 2026-04-13T21:00:00-06:00

Today's Hourly Forecast

24-hour breakdown for Spearfish, South Dakota

12 AM
Clear
13°
Clear
💧 53% 💨 14 km/h
1 AM
Clear
12°
Clear
💧 50% 💨 16.2 km/h
2 AM
Clear
11°
Clear
💧 55% 💨 16.2 km/h
3 AM
Clear
10°
Clear
💧 55% 💨 19.1 km/h
4 AM
Clear
9°
Clear
💧 56% 💨 24.8 km/h
5 AM
Clear
9°
Clear
💧 59% 💨 22.7 km/h
6 AM
Clear
8°
Clear
💧 62% 💨 17.6 km/h
7 AM
Sunny
5°
Sunny
💧 93% 💨 20.2 km/h
8 AM
Sunny
8°
Sunny
💧 73% 💨 31.7 km/h
9 AM
Sunny
10°
Sunny
💧 76% 💨 34.9 km/h
10 AM
Sunny
12°
Sunny
💧 69% 💨 36.4 km/h
11 AM
Sunny
14°
Sunny
💧 67% 💨 34.2 km/h
12 PM
Sunny
17°
Sunny
💧 53% 💨 31.7 km/h
1 PM
Sunny
18°
Sunny
💧 47% 💨 29.2 km/h
2 PM
Overcast
18°
Overcast
💧 37% 💨 34.9 km/h
3 PM
Sunny
19°
Sunny
💧 51% 💨 33.1 km/h
4 PM
Sunny
20°
Sunny
💧 17% 💨 41.8 km/h
5 PM
Sunny
17°
Sunny
💧 18% 💨 45 km/h
6 PM
Thundery outbreaks in nearby
18°
Thundery outbreaks in nearby
💧 60% 💨 28.4 km/h
7 PM
Sunny
15°
Sunny
💧 19% 💨 24.1 km/h
8 PM
Clear
13°
Clear
💧 69% 💨 18.7 km/h
9 PM
Clear
12°
Clear
💧 80% 💨 10.4 km/h
10 PM
Clear
10°
Clear
💧 27% 💨 9.7 km/h
11 PM
Clear
10°
Clear
💧 88% 💨 9.4 km/h

3-Day Forecast

Daily overview for Spearfish, South Dakota

Today
Sunny
Sunny
20° / 7°
🌧️ 0% chance of rain
💧 Avg. humidity: 54%
💨 Max wind: 45 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.4
🌅 Sunrise: 06:15 AM
🌇 Sunset: 07:38 PM
🌙 Waning Crescent
🌑 Moon: 23% lit
Tue, Apr 14
Sunny
Sunny
16° / 5°
🌧️ 0% chance of rain
💧 Avg. humidity: 53%
💨 Max wind: 21.2 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.4
🌅 Sunrise: 06:13 AM
🌇 Sunset: 07:39 PM
🌙 Waning Crescent
🌑 Moon: 15% lit
Wed, Apr 15
Sunny
Sunny
21° / 6°
🌧️ 0% chance of rain
💧 Avg. humidity: 40%
💨 Max wind: 16.6 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.5
🌅 Sunrise: 06:11 AM
🌇 Sunset: 07:41 PM
🌙 Waning Crescent
🌑 Moon: 8% lit

Best Time to Visit Spearfish

Plan your trip to Spearfish, United States around the most favorable weather conditions.

Peak Season
June – September
Warm, dry summers — ideal for outdoor activities.
Shoulder Season
April – May, October
Fewer crowds, moderate prices, mild weather.
Off Season
November – March
Cooler temperatures; some regions may experience rain or snow.
← Back to Spearfish 🗓 View Holidays 2026

Frequently Asked Questions

What is the current weather in Spearfish?
Current conditions in Spearfish: Sunny, temperature 5°C, humidity 93%.
What is the best time to visit Spearfish?
The best time to visit Spearfish is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Spearfish?
Spearfish is located at approximately 44.5° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Spearfish?
The wettest period in Spearfish is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Spearfish?
For visits to Spearfish during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is Spearfish in?
Spearfish is located in United States, in the state of South Dakota.
What are the public holidays in Spearfish in 2026?
View the 2026 public holidays for Spearfish on our Holidays page.
What are the GPS coordinates used for the weather forecast in Spearfish?
The weather forecast for Spearfish uses coordinates 44.4908, -103.8594.