EN
English Español

As of 17:56 MDT

Weather in Roundup, MT

92°Current weather

Roundup, Saturday, 8 August, 17:56

Clear. Feels like 87°. High 94°, low 61°.

Pressure29.74 inHg
Wind7 mph S
Humidity10%
Visibility6.2 mi
Dew point28°
Sun, 0992° / 57°0Clear
92 °Clear

Roundup, Sunday, 9 August

Clear. High 92°, low 57°.

Pressure29.80 inHg
Wind16.5 mph N
Humidity12%
Visibility6.2 mi
Dew point30°
Mon, 1090° / 49°0Clear
90 °Clear

Roundup, Monday, 10 August

Clear. High 90°, low 49°.

Pressure29.85 inHg
Wind5.1 mph E
Humidity28%
Visibility6.2 mi
Dew point42°
Tue, 1191° / 64°0Clear
91 °Clear

Roundup, Tuesday, 11 August

Clear. High 91°, low 64°.

Pressure29.88 inHg
Wind8.2 mph N
Humidity20%
Visibility6.2 mi
Dew point41°
Wed, 1288° / 65°0Overcast
88 °Overcast

Roundup, Wednesday, 12 August

Overcast. High 88°, low 65°.

Pressure29.85 inHg
Wind10.4 mph NE
Humidity27%
Visibility6.2 mi
Dew point45°
Thu, 1393° / 65°0.04Light rain
93 °Light rain

Roundup, Thursday, 13 August

Light rain. High 93°, low 65°.

Pressure29.88 inHg
Wind24.1 mph E
Humidity41%
Visibility—
Dew point53°
Fri, 1489° / 71°0Overcast
89 °Overcast

Roundup, Friday, 14 August

Overcast. High 89°, low 71°.

Pressure29.80 inHg
Wind16.6 mph N
Humidity36%
Visibility—
Dew point53°
Sat, 1585° / 64°0.14Light rain
85 °Light rain

Roundup, Saturday, 15 August

Light rain. High 85°, low 64°.

Pressure30.00 inHg
Wind12.8 mph N
Humidity49%
Visibility—
Dew point56°
Sun, 1691° / 63°0.08Light rain
91 °Light rain

Roundup, Sunday, 16 August

Light rain. High 91°, low 63°.

Pressure29.97 inHg
Wind11.9 mph NW
Humidity27%
Visibility—
Dew point45°
Mon, 1793° / 68°0.01Light rain
93 °Light rain

Roundup, Monday, 17 August

Light rain. High 93°, low 68°.

Pressure29.97 inHg
Wind14.6 mph NE
Humidity23%
Visibility—
Dew point44°
Tue, 1891° / 69°0Overcast
91 °Overcast

Roundup, Tuesday, 18 August

Overcast. High 91°, low 69°.

Pressure29.91 inHg
Wind23.7 mph N
Humidity21%
Visibility—
Dew point40°
Wed, 1980° / 63°0Partly cloudy
80 °Partly cloudy

Roundup, Wednesday, 19 August

Partly cloudy. High 80°, low 63°.

Pressure30.06 inHg
Wind20.5 mph N
Humidity51%
Visibility—
Dew point52°
Thu, 2092° / 63°0Partly cloudy
92 °Partly cloudy

Roundup, Thursday, 20 August

Partly cloudy. High 92°, low 63°.

Pressure29.88 inHg
Wind11 mph E
Humidity30%
Visibility—
Dew point46°
Fri, 2195° / 70°0Clear
95 °Clear

Roundup, Friday, 21 August

Clear. High 95°, low 70°.

Pressure29.83 inHg
Wind15.9 mph NE
Humidity18%
Visibility—
Dew point40°
Sat, 2292° / 65°0Partly cloudy
92 °Partly cloudy

Roundup, Saturday, 22 August

Partly cloudy. High 92°, low 65°.

Pressure29.94 inHg
Wind16.3 mph NE
Humidity31%
Visibility—
Dew point47°
Sun, 2390° / 68°0Clear
90 °Clear

Roundup, Sunday, 23 August

Clear. High 90°, low 68°.

Pressure30.03 inHg
Wind14.8 mph E
Humidity32%
Visibility—
Dew point49°

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Roundup, MT are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in Roundup, MT since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.