How is the weather in Roundup, MT?

At 4:00 PM on Tue, Sep 16, 2025 it is 59 degrees Fahrenheit, feeling like 59 degrees.

Roundup, MT Weather Forecast and Current Conditions (59072)

59°F
Feels Like 59°F

Humidity 95% Dew Point 58°F Wind NW 6 MPH Gusts 15 Barometer 30.27 in.768.9 mm

Solar Rad 140 w/m2

Report from 13.2 miles NW of central Roundup at 4:00 PM Tue, Sep 16, 2025

Current Weather

59°F
Feels Like 59°F

Humidity 95% Dew Point 58°F Wind NW 6 MPH Gusts 15 Barometer 30.27 in.768.9 mm

Solar Rad 140 w/m2

Report from 13.2 miles NW of central Roundup at 4:00 PM Tue, Sep 16, 2025

Forecast at a Glance

TueSep 16

50%

73°

49°

WedSep 17

10%

75°

46°

ThuSep 18

77°

46°

FriSep 19

77°

48°

SatSep 20

82°

51°

SunSep 21

10%

80°

48°

MonSep 22

79°

47°

This Date in Weather History

1961 - Hurricane Esther was seeded by Navy planes in the inaugural experiment of what was to formally become Project STORMFURY next year. Esther was the first hurricane to be initially detected by satellite. On Sept. 10th, TIROS III imaged an area of disturbed weather a hundred miles southwest of the Cabo Verde Islands.

Roundup 7 Day Weather Forecast Details

Tuesday Sep 16

Day: A chance of showers and thunderstorms. Mostly cloudy, with a high near 73. Northwest wind around 6 mph. Chance of precipitation is 50%.

Night: A chance of showers and thunderstorms before 9pm, then a chance of showers and thunderstorms between 9pm and 10pm, then a slight chance of showers and thunderstorms between 10pm and 11pm, then patchy fog. Mostly cloudy, with a low around 49. West wind 2 to 6 mph. Chance of precipitation is 40%.

Wednesday Sep 17

Day: Patchy fog before 9am. Sunny, with a high near 75. North wind around 3 mph.

Night: Mostly clear, with a low around 46. East wind around 3 mph.

Thursday Sep 18

Day: Sunny, with a high near 77. South wind 1 to 5 mph.

Night: Mostly clear, with a low around 46. East wind 1 to 6 mph.

Friday Sep 19

Day: Patchy fog before 9am. Sunny, with a high near 77. South southeast wind around 3 mph.

Night: Partly cloudy, with a low around 48. East southeast wind 1 to 5 mph.

Saturday Sep 20

Day: Mostly sunny, with a high near 82. West southwest wind 2 to 6 mph.

Night: Partly cloudy, with a low around 51. West wind 2 to 6 mph.

Sunday Sep 21

Day: Mostly sunny, with a high near 80. West wind 6 to 13 mph.

Night: Partly cloudy, with a low around 48. West wind 6 to 9 mph.

Monday Sep 22

Day: Sunny, with a high near 79. West wind 6 to 10 mph.

Night: Mostly clear, with a low around 47. West wind 3 to 7 mph.

Sun & Moon Monthly

First Light 6:24 AM

Sunrise 6:55 AM

Sunset 7:25 PM

Last Light 7:55 PM

Moonrise 12:40 AM

Moonset 5:26 PM

Moon Phase

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