Monthly outlook for Big Sandy, MT: average high 47.4°, average low 33.4°. That is 0.4° below the climate normal for October. Precipitation is expected on 3 days (about 0.8 inches), against a normal of 3 days and 0.5 inches. The warmest day looks like 7 November (58.2°), the coolest 26 October (26.4°).
47.4°/33.4°
Average high / low
−0.4°
Below normal
3 / 3
Wet days / normal
0.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
26 October – 4 November
44°
49.9°
-3.3°
5 November – 14 November
52.9°
44.4°
+4.7°
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° / 32°0.15
51 °
Big Sandy, Tuesday, 27 October
Snow. High 51°, low 32°.
Pressure29.80 inHg
Wind9.1 mph SW
Humidity65%
Visibility6.2 mi
Dew point36°
Wed, 2852° / 33°0
52 °
Big Sandy, Wednesday, 28 October
Mostly clear. High 52°, low 33°.
Pressure29.94 inHg
Wind1.4 mph SW
Humidity56%
Visibility6.2 mi
Dew point33°
Thu, 2942° / 28°0
42 °
Big Sandy, Thursday, 29 October
Mostly clear. High 42°, low 28°.
Pressure30.24 inHg
Wind7.5 mph N
Humidity75%
Visibility6.2 mi
Dew point29°
Fri, 3042° / 27°0.01
42 °
Big Sandy, Friday, 30 October
Light rain. High 42°, low 27°.
Pressure30.15 inHg
Wind3.4 mph N
Humidity83%
Visibility6.2 mi
Dew point31°
Sat, 3147° / 28°0
47 °
Big Sandy, Saturday, 31 October
Overcast. High 47°, low 28°.
Pressure30.03 inHg
Wind5.5 mph NE
Humidity72%
Visibility—
Dew point31°
Sun, 0137° / 30°0.52
37 °
Big Sandy, Sunday, 1 November
Snow. High 37°, low 30°.
Pressure30.06 inHg
Wind13.3 mph NW
Humidity89%
Visibility—
Dew point33°
Mon, 0238° / 35°0.11
38 °
Big Sandy, Monday, 2 November
Snow. High 38°, low 35°.
Pressure30.42 inHg
Wind17.1 mph NW
Humidity72%
Visibility—
Dew point28°
Tue, 0347° / 34°0
47 °
Big Sandy, Tuesday, 3 November
Clear. High 47°, low 34°.
Pressure30.33 inHg
Wind6.7 mph SE
Humidity70%
Visibility—
Dew point34°
Wed, 0442° / 31°0
42 °
Big Sandy, Wednesday, 4 November
Clear. High 42°, low 31°.
Pressure30.45 inHg
Wind6 mph SE
Humidity58%
Visibility—
Dew point24°
Thu, 0544° / 32°0
44 °
Big Sandy, Thursday, 5 November
Mostly clear. High 44°, low 32°.
Pressure30.15 inHg
Wind9.2 mph SE
Humidity59%
Visibility—
Dew point27°
Fri, 0652° / 35°0
52 °
Big Sandy, Friday, 6 November
Overcast. High 52°, low 35°.
Pressure29.85 inHg
Wind10.1 mph S
Humidity52%
Visibility—
Dew point29°
Sat, 0758° / 45°0
58 °
Big Sandy, Saturday, 7 November
Overcast. High 58°, low 45°.
Pressure29.53 inHg
Wind13.2 mph SW
Humidity49%
Visibility—
Dew point33°
Sun, 0858° / 42°0
58 °
Big Sandy, Sunday, 8 November
Clear. High 58°, low 42°.
Pressure29.59 inHg
Wind23.2 mph W
Humidity51%
Visibility—
Dew point34°
Mon, 0956° / 43°0
56 °
Big Sandy, Monday, 9 November
Clear. High 56°, low 43°.
Pressure29.83 inHg
Wind21.5 mph W
Humidity49%
Visibility—
Dew point33°
Tue, 1050° / 37°0.01
50 °
Big Sandy, Tuesday, 10 November
Light rain. High 50°, low 37°.
Pressure30.12 inHg
Wind14.2 mph N
Humidity59%
Visibility—
Dew point32°
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.