Hourly Weather Forecast - Keystone, SD

12 AM
26°F
0%
5mph
WSW
Clear
Humidity
52%
Feels like
20°F
Dew Point
11°F
1 AM
27°F
0%
5mph
WSW
Clear
Humidity
52%
Feels like
21°F
Dew Point
12°F
2 AM
28°F
0%
5mph
WSW
Mostly Clear
Humidity
56%
Feels like
21°F
Dew Point
14°F
3 AM
28°F
0%
6mph
WSW
Mostly Clear
Humidity
55%
Feels like
21°F
Dew Point
13°F
4 AM
28°F
0%
6mph
WSW
Mostly Clear
Humidity
52%
Feels like
21°F
Dew Point
12°F
5 AM
27°F
0%
6mph
WSW
Partly Cloudy
Humidity
52%
Feels like
20°F
Dew Point
12°F
6 AM
27°F
0%
6mph
WSW
Partly Cloudy
Humidity
49%
Feels like
21°F
Dew Point
11°F
7 AM
28°F
0%
6mph
WSW
Mostly Cloudy
Humidity
48%
Feels like
22°F
Dew Point
11°F
7:24 AM
8 AM
32°F
0%
5mph
WSW
Cloudy
Humidity
41%
Feels like
26°F
Dew Point
11°F
9 AM
37°F
0%
5mph
WSW
Cloudy
Humidity
35%
Feels like
33°F
Dew Point
12°F
10 AM
42°F
0%
5mph
SW
Cloudy
Humidity
36%
Feels like
39°F
Dew Point
17°F
11 AM
46°F
0%
5mph
SW
Cloudy
Humidity
35%
Feels like
44°F
Dew Point
20°F
12 PM
49°F
0%
6mph
SSW
Cloudy
Humidity
32%
Feels like
46°F
Dew Point
20°F
1 PM
49°F
0%
6mph
SSW
Mostly Cloudy
Humidity
35%
Feels like
47°F
Dew Point
23°F
2 PM
48°F
0%
6mph
SSW
Mostly Cloudy
Humidity
40%
Feels like
46°F
Dew Point
25°F
3 PM
46°F
0%
5mph
SSW
Mostly Cloudy
Humidity
45%
Feels like
43°F
Dew Point
26°F
4 PM
43°F
0%
5mph
SW
Partly Cloudy
Humidity
53%
Feels like
40°F
Dew Point
27°F
4:18 PM
5 PM
40°F
30%
5mph
SW
30% Chance Rain Showers
Humidity
63%
Feels like
36°F
Dew Point
29°F
6 PM
38°F
30%
5mph
WSW
30% Chance Rain Showers
Humidity
74%
Feels like
34°F
Dew Point
31°F
7 PM
38°F
30%
6mph
WSW
30% Chance Rain Showers
Humidity
79%
Feels like
33°F
Dew Point
32°F
8 PM
38°F
30%
7mph
WSW
30% Chance Rain Showers
Humidity
81%
Feels like
33°F
Dew Point
32°F
9 PM
37°F
30%
7mph
WSW
30% Chance Rain Showers
Humidity
83%
Feels like
31°F
Dew Point
32°F
10 PM
36°F
0%
7mph
WSW
Partly Cloudy
Humidity
87%
Feels like
30°F
Dew Point
32°F
11 PM
36°F
0%
8mph
WSW
Mostly Cloudy
Humidity
85%
Feels like
30°F
Dew Point
32°F

Forecast Wind Gusts For Today

Storm Pummels Eastern U.S.

A strong disturbance will sweep across the eastern U.S. today bringing various impacts including rain and thunderstorms, snow and even strong wind gusts.

Rain And Snow Totals Through Tonight

Atmospheric River Impacts Northwest into Northern California

NOAA, NCDC

White Christmas? What Are The Odds

Today's Weather Outlook

Today's Weather Outlook

Friday's Weather Outlook

Weekend Weather Preview

Flu Update Valid For Week Ending December 6, 2025

Weekly Flu Update: Flu Exceeds Annual Baseline

loading ad...

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Snow & Ski Forecast

Traffic Cameras

Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide