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Day 1 Outlook • April 20, 2026
Day 2 Outlook • April 21, 2026
Day 3 Outlook • April 22, 2026
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National Weather Radar

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dBZ 5
75

Hazardous Weather Conditions

  • No active alerts for GRASSY BUTTE, NORTH DAKOTA

Current Conditions: GRASSY BUTTE, NORTH DAKOTA

WATFORD CITY (KS25)

Clear

42.8 F
Humidity:49%
Wind Speed: 15.0 G 24.2 mph
Barometer:29.95 in
Dewpoint:24.8 F
Visibility:10.00 mi
Precip:--
Heat Index:NA
Wind Chill:35.4 F
Apr 19 2026, 11:55 PM MDT
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5 Day Forecast for GRASSY BUTTE, NORTH DAKOTA (58634)

Monday

High 69 °F
Partly Sunny
Monday
Night
Low 42 °F
Partly Cloudy
Tuesday

High 80 °F
Mostly Sunny
Tuesday
Night
Low 50 °F
Mostly Cloudy
Wednesday

High 80 °F
Slight Chance of Rain
Wednesday
Night
Low 39 °F
Chance of T-storms
Thursday

High 50 °F
Rain/Snow Mix
Thursday
Night
Low 28 °F
Chance of Snow
Friday

High 39 °F
Slight Chance of Snow

Detailed Forecast for GRASSY BUTTE, NORTH DAKOTA (58634)

Monday
Partly Sunny. High near 69°F. Wind 9 to 13 mph, with gusts as high as 21 mph.
Monday Night
Partly Cloudy. Low around 42°F. Wind 6 to 12 mph, with gusts as high as 20 mph.
Tuesday
Mostly Sunny. High near 80°F. Wind 9 to 15 mph, with gusts as high as 23 mph.
Tuesday Night
Mostly Cloudy. Low around 50°F. Wind 8 to 12 mph, with gusts as high as 20 mph.
Wednesday
Slight Chance of Rain. High near 80°F. Wind 14 to 17 mph, with gusts as high as 26 mph.
Wednesday Night
Chance of Thunderstorms. Low around 39°F. Wind 14 to 20 mph, with gusts as high as 28 mph.
Thursday
Rain/Snow Mix. High near 50°F. Wind 26 to 29 mph, with gusts as high as 40 mph.
Thursday Night
Chance of Snow. Low around 28°F. Wind 22 to 23 mph, with gusts as high as 31 mph.
Friday
Slight Chance of Snow. High near 39°F. Wind 20 to 23 mph, with gusts as high as 32 mph.
Friday Night
Mostly Cloudy. Low around 23°F. Wind around 13 mph, with gusts as high as 20 mph.
Saturday
Mostly Cloudy. High near 41°F. Wind 14 to 15 mph, with gusts as high as 23 mph.
Saturday Night
Mostly Cloudy. Low around 23°F. Wind around 8 mph, with gusts as high as 13 mph.
Sunday
Mostly Cloudy. High near 44°F. Wind around 10 mph, with gusts as high as 17 mph.
ND Radar
Current Radar • ND
Day 1 Outlook • April 20, 2026

Observation History for GRASSY BUTTE, NORTH DAKOTA

Time Wind
(mph)		 Vis
(mi)		 Weather Precip (in) Temperature (F) Relative
Humidity		 Wind
Chill
(F)		 Heat
Index
(F)		 Pressure
Air Dwpt altimeter
(in)		 sea level
(mb)
11:55 PM MDT 15.0 G 24.2 10.00 Clear -- 42.8 24.8 49% 35.4 NA 29.95 1014.2
11:35 PM MDT 16.1 G 26.4 10.00 Clear -- 44.6 24.8 45% 37.4 NA 29.95 1014.2
11:15 PM MDT 18.3 G 25.3 10.00 Clear -- 44.6 24.8 45% 36.9 NA 29.96 1014.6
10:55 PM MDT 13.9 G 20.8 10.00 Mostly Clear -- 44.6 24.8 45% 38.1 NA 29.97 1014.9
10:35 PM MDT SE 12.8 G 19.7 10.00 Clear -- 44.6 24.8 45% 38.3 NA 29.98 1015.2
10:15 PM MDT SE 12.8 G 18.3 10.00 Clear -- 44.6 24.8 45% 38.3 NA 29.99 1015.6
09:55 PM MDT SE 13.9 10.00 Clear -- 42.8 24.8 49% 35.8 NA 30.00 1015.9
09:35 PM MDT SE 15.0 10.00 Clear -- 44.6 23.0 42% 37.8 NA 30.00 1015.9
09:15 PM MDT SE 15.0 10.00 Clear -- 44.6 23.0 42% 37.8 NA 30.01 1016.3
08:55 PM MDT SE 17.2 10.00 Mostly Clear -- 46.4 23.0 39% 39.6 NA 30.00 1015.9
08:35 PM MDT SE 15.0 10.00 Mostly Clear -- 44.6 23.0 42% 37.8 NA 30.01 1016.3
08:15 PM MDT SE 12.8 10.00 Clear -- 46.4 23.0 39% 40.6 NA 30.01 1016.3
07:55 PM MDT SE 13.9 10.00 Clear -- 46.4 23.0 39% 40.3 NA 30.02 1016.6
07:35 PM MDT SE 12.8 10.00 Clear -- 48.2 23.0 37% 43.0 NA 30.03 1016.9
07:15 PM MDT 11.4 10.00 Clear -- 50.0 23.0 34% NA NA 30.04 1017.3
06:55 PM MDT SE 13.9 10.00 Clear -- 51.8 23.0 32% NA NA 30.04 1017.3
06:35 PM MDT SE 13.9 10.00 Clear -- 53.6 23.0 30% NA NA 30.05 1017.6
06:15 PM MDT SE 10.3 G 19.7 10.00 Clear -- 53.6 23.0 30% NA NA 30.05 1017.6
05:55 PM MDT SE 15.0 10.00 Clear -- 55.4 23.0 28% NA NA 30.06 1018.0
05:35 PM MDT SE 12.8 10.00 Clear -- 55.4 23.0 28% NA NA 30.07 1018.3
05:15 PM MDT 12.8 10.00 Clear -- 55.4 23.0 28% NA NA 30.08 1018.6
04:55 PM MDT 13.9 10.00 Clear -- 55.4 23.0 28% NA NA 30.08 1018.6
04:35 PM MDT S 8.1 G 17.2 10.00 Clear -- 55.4 23.0 28% NA NA 30.10 1019.3
04:15 PM MDT 11.4 G 17.2 10.00 Clear -- 55.4 21.2 26% NA NA 30.12 1019.7

Regional Weather Observation

WATFORD CITY (KS25)

Clear
42.8 F

SIDNEY RICHLAND (KSDY)

Clear
44.6 F

WILLISTON BASIN (KXWA)

Clear
NULL F

GLENDIVE (KGDV)

Clear
46.4 F

BEACH (K20U)

NULL
42.8 F

TIOGA (KD60)

Clear
37.4 F
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