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As of 01:27 MDT

Weather in Grass Valley, MT

65°Current weather

Grass Valley, Sunday, 9 August, 01:27

Mostly clear. Feels like 63°. High 90°, low 48°.

Pressure29.97 inHg
Wind1.6 mph W
Humidity41%
Visibility6.2 mi
Dew point40°

10-day forecast for Grass Valley, MT: 48° to 93°, with precipitation expected on 2 days. The table below breaks each day into morning, afternoon, evening and overnight.

93°
Best day: Tuesday, August 11
69° · 0.08 in
Worst day: Sunday, August 16

Tap any day below to see morning, afternoon, evening and overnight.

Mon, 1089° / 49°0Clear
MorningClear55°feels 52°
AfternoonClear86°feels 83°
EveningClear80°feels 79°
OvernightMostly clear56°feels 53°
89 °Clear

Grass Valley, Monday, 10 August

Clear. High 89°, low 49°.

Pressure29.85 inHg
Wind2.8 mph NW
Humidity15%
Visibility6.2 mi
Dew point31°
Tue, 1193° / 53°0Clear
MorningClear61°feels 58°
AfternoonClear90°feels 86°
EveningClear83°feels 80°
OvernightClear58°feels 55°
93 °Clear

Grass Valley, Tuesday, 11 August

Clear. High 93°, low 53°.

Pressure29.94 inHg
Wind0.9 mph NW
Humidity17%
Visibility6.2 mi
Dew point34°
Wed, 1291° / 54°0Overcast
MorningOvercast61°feels 59°
AfternoonOvercast90°feels 86°
EveningOvercast81°feels 80°
OvernightClear59°feels 57°
91 °Overcast

Grass Valley, Wednesday, 12 August

Overcast. High 91°, low 54°.

Pressure29.85 inHg
Wind0.4 mph SE
Humidity19%
Visibility6.2 mi
Dew point36°
Thu, 1390° / 54°0.02Light rain
MorningLight rain63°feels 62°
AfternoonLight rain85°feels 83°
EveningLight rain87°feels 83°
OvernightLight rain69°feels 67°
90 °Light rain

Grass Valley, Thursday, 13 August

Light rain. High 90°, low 54°.

Pressure29.80 inHg
Wind10.1 mph NW
Humidity30%
Visibility—
Dew point46°
Fri, 1486° / 58°0Overcast
MorningOvercast65°feels 64°
AfternoonOvercast81°feels 81°
EveningOvercast81°feels 79°
OvernightOvercast64°feels 64°
86 °Overcast

Grass Valley, Friday, 14 August

Overcast. High 86°, low 58°.

Pressure29.91 inHg
Wind9.1 mph N
Humidity41%
Visibility—
Dew point52°
Sat, 1588° / 54°0.02Light rain
MorningLight rain61°feels 61°
AfternoonLight rain81°feels 80°
EveningLight rain81°feels 79°
OvernightLight rain62°feels 62°
88 °Light rain

Grass Valley, Saturday, 15 August

Light rain. High 88°, low 54°.

Pressure30.03 inHg
Wind7.4 mph S
Humidity35%
Visibility—
Dew point47°
Sun, 1669° / 57°0.08Light rain
MorningLight rain58°feels 58°
AfternoonLight rain64°feels 64°
EveningLight rain68°feels 67°
OvernightLight rain61°feels 60°
69 °Light rain

Grass Valley, Sunday, 16 August

Light rain. High 69°, low 57°.

Pressure30.06 inHg
Wind3.6 mph E
Humidity86%
Visibility—
Dew point58°
Mon, 1785° / 57°0.09Light rain
MorningLight rain65°feels 65°
AfternoonLight rain79°feels 79°
EveningLight rain71°feels 70°
OvernightLight rain60°feels 60°
85 °Light rain

Grass Valley, Monday, 17 August

Light rain. High 85°, low 57°.

Pressure29.91 inHg
Wind4.8 mph W
Humidity41%
Visibility—
Dew point52°
Tue, 1875° / 52°0.01Light rain
MorningLight rain58°feels 57°
AfternoonLight rain72°feels 71°
EveningLight rain71°feels 70°
OvernightLight rain60°feels 58°
75 °Light rain

Grass Valley, Tuesday, 18 August

Light rain. High 75°, low 52°.

Pressure29.94 inHg
Wind10.9 mph W
Humidity43%
Visibility—
Dew point46°

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 Grass Valley, 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.