10-day forecast for Portage, MT: 48° to 89°, with precipitation expected on 0 days. The table below breaks each day into morning, afternoon, evening and overnight.
89°
Best day: Monday, August 17
65°
Worst day: Friday, August 14
Tap any day below to see morning, afternoon, evening and overnight.
Mon, 1085° / 48°0
Morning56°feels 53°
Afternoon79°feels 79°
Evening82°feels 80°
Overnight55°feels 53°
85 °
Portage, Monday, 10 August
Clear. High 85°, low 48°.
Pressure29.83 inHg
Wind8.4 mph NW
Humidity27%
Visibility6.2 mi
Dew point43°
Tue, 1185° / 60°0
Morning63°feels 61°
Afternoon82°feels 80°
Evening80°feels 79°
Overnight68°feels 66°
85 °
Portage, Tuesday, 11 August
Clear. High 85°, low 60°.
Pressure29.94 inHg
Wind9.6 mph NW
Humidity31%
Visibility6.2 mi
Dew point45°
Wed, 1285° / 60°0
Morning63°feels 61°
Afternoon80°feels 80°
Evening81°feels 79°
Overnight65°feels 63°
85 °
Portage, Wednesday, 12 August
Overcast. High 85°, low 60°.
Pressure29.91 inHg
Wind2.7 mph E
Humidity33%
Visibility6.2 mi
Dew point43°
Thu, 1381° / 58°0.01
Morning63°feels 62°
Afternoon75°feels 74°
Evening79°feels 78°
Overnight67°feels 65°
81 °
Portage, Thursday, 13 August
Light rain. High 81°, low 58°.
Pressure29.83 inHg
Wind10.9 mph N
Humidity40%
Visibility—
Dew point46°
Fri, 1465° / 56°0.02
Morning58°feels 56°
Afternoon62°feels 61°
Evening64°feels 63°
Overnight61°feels 60°
65 °
Portage, Friday, 14 August
Light rain. High 65°, low 56°.
Pressure30.06 inHg
Wind12.3 mph N
Humidity67%
Visibility—
Dew point50°
Sat, 1585° / 55°0.02
Morning59°feels 58°
Afternoon73°feels 71°
Evening82°feels 80°
Overnight64°feels 64°
85 °
Portage, Saturday, 15 August
Light rain. High 85°, low 55°.
Pressure30.06 inHg
Wind10.1 mph NE
Humidity50%
Visibility—
Dew point49°
Sun, 1682° / 61°0
Morning67°feels 66°
Afternoon82°feels 80°
Evening78°feels 77°
Overnight71°feels 70°
82 °
Portage, Sunday, 16 August
Overcast. High 82°, low 61°.
Pressure29.88 inHg
Wind22.7 mph S
Humidity28%
Visibility—
Dew point43°
Mon, 1789° / 61°0.01
Morning67°feels 66°
Afternoon84°feels 82°
Evening85°feels 82°
Overnight69°feels 68°
89 °
Portage, Monday, 17 August
Light rain. High 89°, low 61°.
Pressure29.83 inHg
Wind15.5 mph W
Humidity29%
Visibility—
Dew point45°
Tue, 1884° / 61°0
Morning66°feels 65°
Afternoon79°feels 77°
Evening80°feels 78°
Overnight69°feels 68°
84 °
Portage, Tuesday, 18 August
Overcast. High 84°, low 61°.
Pressure29.80 inHg
Wind23.7 mph W
Humidity32%
Visibility—
Dew point44°
About this forecast
How reliable is a 10-day forecast?
The first 3–5 days are the most reliable, typically within 2–4°. From day six to ten the models show the trend: the direction of change is right more often than the exact numbers.
What does the time-of-day table show?
Temperature in Portage, MT around 8am, 2pm, 8pm and 2am each day — handy for planning a walk, a drive or work outdoors.
How is the best day chosen?
We weigh the daytime high against precipitation: a warm, dry day scores highest.