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As of 18:11 MDT

Weather in Portage, MT

84°Current weather

Portage, Saturday, 8 August, 18:11

Mostly clear. Feels like 82°. High 84°, low 52°.

Pressure29.77 inHg
Wind11.9 mph NE
Humidity26%
Visibility6.2 mi
Dew point44°
Sun, 0981° / 51°0Clear
81 °Clear

Portage, Sunday, 9 August

Clear. High 81°, low 51°.

Pressure29.94 inHg
Wind11.1 mph NW
Humidity37%
Visibility6.2 mi
Dew point47°
Mon, 1086° / 45°0Clear
86 °Clear

Portage, Monday, 10 August

Clear. High 86°, low 45°.

Pressure29.83 inHg
Wind6.2 mph N
Humidity29%
Visibility6.2 mi
Dew point44°
Tue, 1184° / 57°0Clear
84 °Clear

Portage, Tuesday, 11 August

Clear. High 84°, low 57°.

Pressure30.00 inHg
Wind8 mph NW
Humidity38%
Visibility6.2 mi
Dew point47°
Wed, 1287° / 60°0Overcast
87 °Overcast

Portage, Wednesday, 12 August

Overcast. High 87°, low 60°.

Pressure29.85 inHg
Wind7.1 mph NW
Humidity28%
Visibility6.2 mi
Dew point43°
Thu, 1384° / 60°0.04Light rain
84 °Light rain

Portage, Thursday, 13 August

Light rain. High 84°, low 60°.

Pressure29.88 inHg
Wind17.7 mph E
Humidity40%
Visibility—
Dew point46°
Fri, 1481° / 65°0Partly cloudy
81 °Partly cloudy

Portage, Friday, 14 August

Partly cloudy. High 81°, low 65°.

Pressure29.91 inHg
Wind13.8 mph NE
Humidity40%
Visibility—
Dew point48°
Sat, 1577° / 60°0Overcast
77 °Overcast

Portage, Saturday, 15 August

Overcast. High 77°, low 60°.

Pressure30.03 inHg
Wind11.8 mph NE
Humidity42%
Visibility—
Dew point46°
Sun, 1692° / 61°0.01Light rain
92 °Light rain

Portage, Sunday, 16 August

Light rain. High 92°, low 61°.

Pressure29.94 inHg
Wind24.7 mph S
Humidity20%
Visibility—
Dew point36°
Mon, 1791° / 63°0Mostly clear
91 °Mostly clear

Portage, Monday, 17 August

Mostly clear. High 91°, low 63°.

Pressure30.00 inHg
Wind14.8 mph NE
Humidity23%
Visibility—
Dew point39°
Tue, 1886° / 65°0.02Light rain
86 °Light rain

Portage, Tuesday, 18 August

Light rain. High 86°, low 65°.

Pressure29.91 inHg
Wind21.2 mph W
Humidity22%
Visibility—
Dew point36°
Wed, 1986° / 57°0.01Light rain
86 °Light rain

Portage, Wednesday, 19 August

Light rain. High 86°, low 57°.

Pressure30.00 inHg
Wind10.9 mph E
Humidity34%
Visibility—
Dew point44°
Thu, 2093° / 64°0Overcast
93 °Overcast

Portage, Thursday, 20 August

Overcast. High 93°, low 64°.

Pressure29.85 inHg
Wind8.4 mph S
Humidity21%
Visibility—
Dew point38°
Fri, 2189° / 69°0Clear
89 °Clear

Portage, Friday, 21 August

Clear. High 89°, low 69°.

Pressure29.91 inHg
Wind11.2 mph E
Humidity33%
Visibility—
Dew point49°
Sat, 2290° / 66°0Overcast
90 °Overcast

Portage, Saturday, 22 August

Overcast. High 90°, low 66°.

Pressure29.91 inHg
Wind12.9 mph NE
Humidity27%
Visibility—
Dew point44°
Sun, 2390° / 64°0Mostly clear
90 °Mostly clear

Portage, Sunday, 23 August

Mostly clear. High 90°, low 64°.

Pressure30.03 inHg
Wind17.9 mph NE
Humidity30%
Visibility—
Dew point46°

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 Portage, 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 Portage, 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.