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As of 00:51 MDT

Weather in Big Arm, MT

55°Current weather

Big Arm, Sunday, 9 August, 00:51

Clear. Feels like 53°. High 85°, low 53°.

Pressure29.91 inHg
Wind1.3 mph W
Humidity56%
Visibility6.2 mi
Dew point40°

10-day forecast for Big Arm, MT: 51° to 87°, with precipitation expected on 2 days. The table below breaks each day into morning, afternoon, evening and overnight.

87°
Best day: Monday, August 10
80° · 0.16 in
Worst day: Monday, August 17

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

Mon, 1087° / 51°0Clear
MorningClear56°feels 53°
AfternoonClear84°feels 81°
EveningClear82°feels 80°
OvernightOvercast56°feels 53°
87 °Clear

Big Arm, Monday, 10 August

Clear. High 87°, low 51°.

Pressure29.85 inHg
Wind2.8 mph SE
Humidity19%
Visibility6.2 mi
Dew point33°
Tue, 1186° / 56°0Clear
MorningClear61°feels 59°
AfternoonClear81°feels 80°
EveningClear77°feels 76°
OvernightClear60°feels 58°
86 °Clear

Big Arm, Tuesday, 11 August

Clear. High 86°, low 56°.

Pressure29.97 inHg
Wind3.1 mph E
Humidity23%
Visibility6.2 mi
Dew point36°
Wed, 1283° / 55°0Clear
MorningClear60°feels 59°
AfternoonClear82°feels 80°
EveningOvercast76°feels 75°
OvernightClear61°feels 59°
83 °Clear

Big Arm, Wednesday, 12 August

Clear. High 83°, low 55°.

Pressure29.88 inHg
Wind4.5 mph E
Humidity36%
Visibility6.2 mi
Dew point46°
Thu, 1383° / 55°0.02Light rain
MorningLight rain60°feels 60°
AfternoonLight rain75°feels 74°
EveningLight rain81°feels 79°
OvernightLight rain69°feels 67°
83 °Light rain

Big Arm, Thursday, 13 August

Light rain. High 83°, low 55°.

Pressure29.83 inHg
Wind8.1 mph NE
Humidity46%
Visibility—
Dew point49°
Fri, 1481° / 55°0Overcast
MorningOvercast60°feels 59°
AfternoonOvercast73°feels 73°
EveningOvercast79°feels 78°
OvernightOvercast68°feels 67°
81 °Overcast

Big Arm, Friday, 14 August

Overcast. High 81°, low 55°.

Pressure29.94 inHg
Wind9.6 mph N
Humidity48%
Visibility—
Dew point49°
Sat, 1585° / 53°0.01Light rain
MorningLight rain59°feels 58°
AfternoonLight rain76°feels 75°
EveningLight rain82°feels 80°
OvernightLight rain67°feels 66°
85 °Light rain

Big Arm, Saturday, 15 August

Light rain. High 85°, low 53°.

Pressure30.03 inHg
Wind7.3 mph N
Humidity44%
Visibility—
Dew point48°
Sun, 1668° / 60°0.04Light rain
MorningLight rain62°feels 61°
AfternoonLight rain67°feels 67°
EveningLight rain66°feels 66°
OvernightLight rain61°feels 61°
68 °Light rain

Big Arm, Sunday, 16 August

Light rain. High 68°, low 60°.

Pressure30.03 inHg
Wind10.3 mph S
Humidity60%
Visibility—
Dew point52°
Mon, 1780° / 60°0.16Light rain
MorningLight rain64°feels 64°
AfternoonLight rain74°feels 73°
EveningLight rain64°feels 63°
OvernightLight rain60°feels 60°
80 °Light rain

Big Arm, Monday, 17 August

Light rain. High 80°, low 60°.

Pressure29.91 inHg
Wind15.8 mph SW
Humidity46%
Visibility—
Dew point51°
Tue, 1875° / 53°0.04Light rain
MorningLight rain58°feels 57°
AfternoonLight rain70°feels 69°
EveningLight rain72°feels 71°
OvernightLight rain60°feels 59°
75 °Light rain

Big Arm, Tuesday, 18 August

Light rain. High 75°, low 53°.

Pressure29.94 inHg
Wind15.1 mph W
Humidity44%
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 Big Arm, 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.