Monthly outlook for Big Sandy, MT: average high 49.9°, average low 36.1°. That is 1° above the climate normal for October. Precipitation is expected on 1 day (about 0.3 inches), against a normal of 3 days and 0.5 inches. The warmest day looks like 5 November (61.8°), the coolest 31 October (26.9°).
49.9°/36.1°
Average high / low
+1°
Above normal
1 / 3
Wet days / normal
0.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
26 October – 4 November
47.6°
49.9°
-1.3°
5 November – 14 November
53.6°
44.4°
+5.1°
15 November – 24 November
at normal
40.4°
—
October records over 66 years
87.3°1 October 2011All-time high
-12.6°30 October 1991All-time low
Tue, 2751° / 33°0
51 °
Big Sandy, Tuesday, 27 October
Light rain. High 51°, low 33°.
Pressure29.83 inHg
Wind8.8 mph SW
Humidity82%
Visibility6.2 mi
Dew point38°
Wed, 2853° / 33°0.03
53 °
Big Sandy, Wednesday, 28 October
Light rain. High 53°, low 33°.
Pressure29.94 inHg
Wind6.5 mph SW
Humidity51%
Visibility6.2 mi
Dew point32°
Thu, 2942° / 30°0
42 °
Big Sandy, Thursday, 29 October
Overcast. High 42°, low 30°.
Pressure30.21 inHg
Wind6.9 mph N
Humidity75%
Visibility6.2 mi
Dew point31°
Fri, 3040° / 28°0.02
40 °
Big Sandy, Friday, 30 October
Light rain. High 40°, low 28°.
Pressure30.12 inHg
Wind5.2 mph N
Humidity72%
Visibility—
Dew point29°
Sat, 3150° / 27°0
50 °
Big Sandy, Saturday, 31 October
Overcast. High 50°, low 27°.
Pressure30.03 inHg
Wind4.5 mph W
Humidity71%
Visibility—
Dew point31°
Sun, 0148° / 38°0.2
48 °
Big Sandy, Sunday, 1 November
Rain. High 48°, low 38°.
Pressure29.74 inHg
Wind14.9 mph W
Humidity64%
Visibility—
Dew point35°
Mon, 0249° / 36°0.01
49 °
Big Sandy, Monday, 2 November
Light snow. High 49°, low 36°.
Pressure30.00 inHg
Wind18.2 mph W
Humidity53%
Visibility—
Dew point28°
Tue, 0345° / 32°0
45 °
Big Sandy, Tuesday, 3 November
Clear. High 45°, low 32°.
Pressure30.09 inHg
Wind4.7 mph NE
Humidity50%
Visibility—
Dew point24°
Wed, 0454° / 36°0
54 °
Big Sandy, Wednesday, 4 November
Overcast. High 54°, low 36°.
Pressure30.03 inHg
Wind7.9 mph S
Humidity46%
Visibility—
Dew point27°
Thu, 0562° / 47°0
62 °
Big Sandy, Thursday, 5 November
Overcast. High 62°, low 47°.
Pressure29.83 inHg
Wind6.9 mph S
Humidity53%
Visibility—
Dew point39°
Fri, 0653° / 40°0
53 °
Big Sandy, Friday, 6 November
Overcast. High 53°, low 40°.
Pressure29.71 inHg
Wind12.2 mph NE
Humidity76%
Visibility—
Dew point41°
Sat, 0748° / 38°0
48 °
Big Sandy, Saturday, 7 November
Light rain. High 48°, low 38°.
Pressure30.03 inHg
Wind10.2 mph N
Humidity74%
Visibility—
Dew point33°
Sun, 0856° / 42°0
56 °
Big Sandy, Sunday, 8 November
Overcast. High 56°, low 42°.
Pressure29.97 inHg
Wind8.4 mph S
Humidity49%
Visibility—
Dew point33°
Mon, 0957° / 47°0.01
57 °
Big Sandy, Monday, 9 November
Light rain. High 57°, low 47°.
Pressure29.91 inHg
Wind11.1 mph N
Humidity48%
Visibility—
Dew point34°
Tue, 1045° / 42°0.02
45 °
Big Sandy, Tuesday, 10 November
Light rain. High 45°, low 42°.
Pressure30.03 inHg
Wind9.8 mph NE
Humidity83%
Visibility—
Dew point38°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 1142° / 25°0.03
42 °
Big Sandy, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high42°
Average low25°
Average precipitation0.03 in
Chance of precipitation23%
Record high66° (1990)
Record low-8° (2012)
Thu, 1244° / 27°0.03
44 °
Big Sandy, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high44°
Average low27°
Average precipitation0.03 in
Chance of precipitation13%
Record high73° (1999)
Record low-2° (1986)
Fri, 1344° / 28°0.02
44 °
Big Sandy, Friday, 13 November
Climate normal for this date — 60-year average.
Average high44°
Average low28°
Average precipitation0.02 in
Chance of precipitation17%
Record high70° (2025)
Record low1° (2014)
Sat, 1444° / 27°0.04
44 °
Big Sandy, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high44°
Average low27°
Average precipitation0.04 in
Chance of precipitation20%
Record high66° (1999)
Record low-3° (2014)
Sun, 1544° / 27°0.01
44 °
Big Sandy, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high44°
Average low27°
Average precipitation0.01 in
Chance of precipitation7%
Record high65° (2021)
Record low-7° (2014)
Mon, 1644° / 28°0.03
44 °
Big Sandy, Monday, 16 November
Climate normal for this date — 60-year average.
Average high44°
Average low28°
Average precipitation0.03 in
Chance of precipitation17%
Record high62° (2001)
Record low5° (1965)
Tue, 1741° / 26°0.03
41 °
Big Sandy, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high41°
Average low26°
Average precipitation0.03 in
Chance of precipitation18%
Record high63° (2009)
Record low0° (2022)
Wed, 1842° / 26°0.02
42 °
Big Sandy, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high42°
Average low26°
Average precipitation0.02 in
Chance of precipitation15%
Record high62° (2008)
Record low-3° (2022)
Thu, 1940° / 24°0.02
40 °
Big Sandy, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high40°
Average low24°
Average precipitation0.02 in
Chance of precipitation10%
Record high61° (2003)
Record low-4° (1985)
Fri, 2040° / 24°0.02
40 °
Big Sandy, Friday, 20 November
Climate normal for this date — 60-year average.
Average high40°
Average low24°
Average precipitation0.02 in
Chance of precipitation17%
Record high58° (2009)
Record low-13° (1985)
Sat, 2139° / 23°0.02
39 °
Big Sandy, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high39°
Average low23°
Average precipitation0.02 in
Chance of precipitation18%
Record high62° (1974)
Record low-16° (1996)
Sun, 2237° / 23°0.03
37 °
Big Sandy, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high37°
Average low23°
Average precipitation0.03 in
Chance of precipitation20%
Record high58° (2017)
Record low-19° (1985)
Mon, 2338° / 22°0.03
38 °
Big Sandy, Monday, 23 November
Climate normal for this date — 60-year average.
Average high38°
Average low22°
Average precipitation0.03 in
Chance of precipitation18%
Record high65° (2017)
Record low-29° (1985)
Tue, 2438° / 24°0.03
38 °
Big Sandy, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high38°
Average low24°
Average precipitation0.03 in
Chance of precipitation27%
Record high56° (1986)
Record low-21° (1993)
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 Big Sandy, 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 Big Sandy, 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.