Monthly outlook for Shelby, MT: average high 48°, average low 35.5°. That is 1.3° above the climate normal for October. Precipitation is expected on 3 days (about 0.3 inches), against a normal of 3 days and 0.4 inches. The warmest day looks like 6 November (56.2°), the coolest 29 October (29.1°).
48°/35.5°
Average high / low
+1.3°
Above normal
3 / 3
Wet days / normal
0.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
27 October – 5 November
45.1°
47.7°
-1.5°
6 November – 15 November
53°
42.2°
+6°
16 November – 25 November
at normal
38.1°
—
October records over 66 years
86.2°1 October 1992All-time high
-11.9°30 October 1991All-time low
Climate normals and records are computed from the nearest reference point — Dunkirk (9 mi).
Wed, 2845° / 30°0.01
45 °
Shelby, Wednesday, 28 October
Light rain. High 45°, low 30°.
Pressure30.00 inHg
Wind3.6 mph N
Humidity74%
Visibility6.2 mi
Dew point33°
Thu, 2938° / 29°0
38 °
Shelby, Thursday, 29 October
Overcast. High 38°, low 29°.
Pressure30.24 inHg
Wind3.3 mph SE
Humidity88%
Visibility6.2 mi
Dew point29°
Fri, 3038° / 31°0.04
38 °
Shelby, Friday, 30 October
Snow. High 38°, low 31°.
Pressure30.18 inHg
Wind10 mph SE
Humidity88%
Visibility3.1 mi
Dew point29°
Sat, 3149° / 31°0
49 °
Shelby, Saturday, 31 October
Overcast. High 49°, low 31°.
Pressure30.06 inHg
Wind4.4 mph SE
Humidity76%
Visibility—
Dew point33°
Sun, 0139° / 32°0.14
39 °
Shelby, Sunday, 1 November
Light rain. High 39°, low 32°.
Pressure29.97 inHg
Wind10.9 mph NW
Humidity96%
Visibility—
Dew point36°
Mon, 0248° / 34°0
48 °
Shelby, Monday, 2 November
Mostly clear. High 48°, low 34°.
Pressure30.42 inHg
Wind10.4 mph NW
Humidity52%
Visibility—
Dew point26°
Tue, 0350° / 34°0
50 °
Shelby, Tuesday, 3 November
Overcast. High 50°, low 34°.
Pressure30.24 inHg
Wind7.2 mph S
Humidity39%
Visibility—
Dew point20°
Wed, 0448° / 37°0
48 °
Shelby, Wednesday, 4 November
Overcast. High 48°, low 37°.
Pressure30.09 inHg
Wind4.6 mph N
Humidity47%
Visibility—
Dew point25°
Thu, 0547° / 36°0
47 °
Shelby, Thursday, 5 November
Overcast. High 47°, low 36°.
Pressure30.18 inHg
Wind7.4 mph SE
Humidity52%
Visibility—
Dew point26°
Fri, 0656° / 40°0
56 °
Shelby, Friday, 6 November
Partly cloudy. High 56°, low 40°.
Pressure29.91 inHg
Wind7.8 mph NW
Humidity45%
Visibility—
Dew point29°
Sat, 0753° / 40°0
53 °
Shelby, Saturday, 7 November
Overcast. High 53°, low 40°.
Pressure29.80 inHg
Wind8.5 mph SE
Humidity47%
Visibility—
Dew point28°
Sun, 0856° / 46°0
56 °
Shelby, Sunday, 8 November
Overcast. High 56°, low 46°.
Pressure29.77 inHg
Wind25.4 mph W
Humidity45%
Visibility—
Dew point32°
Mon, 0951° / 42°0
51 °
Shelby, Monday, 9 November
Light rain. High 51°, low 42°.
Pressure29.91 inHg
Wind22.3 mph W
Humidity43%
Visibility—
Dew point27°
Tue, 1051° / 35°0
51 °
Shelby, Tuesday, 10 November
Partly cloudy. High 51°, low 35°.
Pressure29.94 inHg
Wind20.2 mph SW
Humidity51%
Visibility—
Dew point26°
Wed, 1150° / 37°0
50 °
Shelby, Wednesday, 11 November
Clear. High 50°, low 37°.
Pressure29.88 inHg
Wind19.4 mph W
Humidity53%
Visibility—
Dew point28°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 1241° / 24°0.02
41 °
Shelby, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high41°
Average low24°
Average precipitation0.02 in
Chance of precipitation12%
Record high70° (1990)
Record low-11° (1985)
Fri, 1342° / 26°0.01
42 °
Shelby, Friday, 13 November
Climate normal for this date — 60-year average.
Average high42°
Average low26°
Average precipitation0.01 in
Chance of precipitation8%
Record high66° (2025)
Record low-10° (2014)
Sat, 1443° / 25°0.02
43 °
Shelby, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high43°
Average low25°
Average precipitation0.02 in
Chance of precipitation15%
Record high65° (1999)
Record low-16° (2014)
Sun, 1543° / 25°0.01
43 °
Shelby, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high43°
Average low25°
Average precipitation0.01 in
Chance of precipitation7%
Record high64° (2021)
Record low-2° (2014)
Mon, 1642° / 26°0.03
42 °
Shelby, Monday, 16 November
Climate normal for this date — 60-year average.
Average high42°
Average low26°
Average precipitation0.03 in
Chance of precipitation12%
Record high60° (2001)
Record low5° (1965)
Tue, 1740° / 24°0.03
40 °
Shelby, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high40°
Average low24°
Average precipitation0.03 in
Chance of precipitation20%
Record high61° (1976)
Record low-1° (1966)
Wed, 1840° / 24°0.03
40 °
Shelby, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high40°
Average low24°
Average precipitation0.03 in
Chance of precipitation20%
Record high61° (2008)
Record low-7° (2022)
Thu, 1938° / 23°0.02
38 °
Shelby, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high38°
Average low23°
Average precipitation0.02 in
Chance of precipitation15%
Record high59° (2003)
Record low-13° (1985)
Fri, 2038° / 22°0.02
38 °
Shelby, Friday, 20 November
Climate normal for this date — 60-year average.
Average high38°
Average low22°
Average precipitation0.02 in
Chance of precipitation13%
Record high58° (2002)
Record low-20° (1985)
Sat, 2137° / 21°0.02
37 °
Shelby, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high37°
Average low21°
Average precipitation0.02 in
Chance of precipitation10%
Record high59° (1974)
Record low-22° (1996)
Sun, 2236° / 22°0.02
36 °
Shelby, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high36°
Average low22°
Average precipitation0.02 in
Chance of precipitation13%
Record high59° (2005)
Record low-12° (1985)
Mon, 2337° / 21°0.01
37 °
Shelby, Monday, 23 November
Climate normal for this date — 60-year average.
Average high37°
Average low21°
Average precipitation0.01 in
Chance of precipitation10%
Record high62° (2017)
Record low-31° (1985)
Tue, 2437° / 22°0.03
37 °
Shelby, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high37°
Average low22°
Average precipitation0.03 in
Chance of precipitation20%
Record high54° (2005)
Record low-26° (2010)
Wed, 2535° / 21°0.04
35 °
Shelby, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high35°
Average low21°
Average precipitation0.04 in
Chance of precipitation28%
Record high54° (2005)
Record low-18° (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 Shelby, 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 Shelby, 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.