Monthly outlook for Unionville, MT: average high 54.2°, average low 34.4°. That is 2.1° above the climate normal for October. Precipitation is expected on 2 days (about 1.0 inches), against a normal of 4 days and 0.7 inches. The warmest day looks like 22 October (66.1°), the coolest 27 October (24.2°).
54.2°/34.4°
Average high / low
+2.1°
Above normal
2 / 4
Wet days / normal
1.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
19 October – 28 October
54.5°
52.8°
+1°
29 October – 7 November
53.7°
46°
+4.3°
8 November – 17 November
at normal
41.4°
—
October records over 66 years
85.5°1 October 2011All-time high
-9.6°26 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Helena (5 mi).
Tue, 2062° / 38°0
62 °
Unionville, Tuesday, 20 October
Overcast. High 62°, low 38°.
Pressure30.12 inHg
Wind3.7 mph N
Humidity47%
Visibility6.2 mi
Dew point35°
Wed, 2160° / 35°0.02
60 °
Unionville, Wednesday, 21 October
Light rain. High 60°, low 35°.
Pressure30.03 inHg
Wind4.1 mph NE
Humidity51%
Visibility6.1 mi
Dew point37°
Thu, 2266° / 38°0.01
66 °
Unionville, Thursday, 22 October
Light rain. High 66°, low 38°.
Pressure29.88 inHg
Wind3.7 mph NE
Humidity56%
Visibility6.2 mi
Dew point43°
Fri, 2347° / 40°0.81
47 °
Unionville, Friday, 23 October
Rain. High 47°, low 40°.
Pressure29.77 inHg
Wind17.1 mph W
Humidity92%
Visibility—
Dew point43°
Sat, 2448° / 32°0.2
48 °
Unionville, Saturday, 24 October
Snow. High 48°, low 32°.
Pressure30.21 inHg
Wind7.9 mph NE
Humidity61%
Visibility—
Dew point31°
Sun, 2558° / 33°0
58 °
Unionville, Sunday, 25 October
Overcast. High 58°, low 33°.
Pressure30.15 inHg
Wind7.7 mph SW
Humidity26%
Visibility—
Dew point17°
Mon, 2644° / 28°0
44 °
Unionville, Monday, 26 October
Overcast. High 44°, low 28°.
Pressure30.36 inHg
Wind7.3 mph SW
Humidity59%
Visibility—
Dew point23°
Tue, 2746° / 24°0
46 °
Unionville, Tuesday, 27 October
Clear. High 46°, low 24°.
Pressure30.39 inHg
Wind6.8 mph SW
Humidity47%
Visibility—
Dew point20°
Wed, 2849° / 28°0
49 °
Unionville, Wednesday, 28 October
Clear. High 49°, low 28°.
Pressure30.21 inHg
Wind6.3 mph SW
Humidity34%
Visibility—
Dew point16°
Thu, 2953° / 36°0
53 °
Unionville, Thursday, 29 October
Overcast. High 53°, low 36°.
Pressure29.94 inHg
Wind4.9 mph SW
Humidity30%
Visibility—
Dew point18°
Fri, 3055° / 33°0
55 °
Unionville, Friday, 30 October
Mostly clear. High 55°, low 33°.
Pressure29.77 inHg
Wind6.1 mph SW
Humidity35%
Visibility—
Dew point22°
Sat, 3155° / 38°0
55 °
Unionville, Saturday, 31 October
Mostly clear. High 55°, low 38°.
Pressure29.83 inHg
Wind12.7 mph W
Humidity34%
Visibility—
Dew point23°
Sun, 0157° / 37°0
57 °
Unionville, Sunday, 1 November
Clear. High 57°, low 37°.
Pressure29.97 inHg
Wind7 mph SW
Humidity40%
Visibility—
Dew point27°
Mon, 0254° / 41°0.01
54 °
Unionville, Monday, 2 November
Light rain. High 54°, low 41°.
Pressure29.88 inHg
Wind12.7 mph W
Humidity37%
Visibility—
Dew point26°
Tue, 0348° / 38°0
48 °
Unionville, Tuesday, 3 November
Overcast. High 48°, low 38°.
Pressure30.12 inHg
Wind4.9 mph SW
Humidity58%
Visibility—
Dew point32°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 0446° / 28°0.05
46 °
Unionville, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high46°
Average low28°
Average precipitation0.05 in
Chance of precipitation28%
Record high63° (2021)
Record low-1° (1973)
Thu, 0546° / 28°0.04
46 °
Unionville, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high46°
Average low28°
Average precipitation0.04 in
Chance of precipitation27%
Record high68° (2020)
Record low2° (1961)
Fri, 0645° / 27°0.05
45 °
Unionville, Friday, 6 November
Climate normal for this date — 60-year average.
Average high45°
Average low27°
Average precipitation0.05 in
Chance of precipitation27%
Record high64° (2010)
Record low4° (2017)
Sat, 0744° / 27°0.04
44 °
Unionville, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high44°
Average low27°
Average precipitation0.04 in
Chance of precipitation32%
Record high63° (2010)
Record low-1° (2017)
Sun, 0842° / 26°0.06
42 °
Unionville, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high42°
Average low26°
Average precipitation0.06 in
Chance of precipitation35%
Record high62° (1999)
Record low5° (2022)
Mon, 0942° / 25°0.04
42 °
Unionville, Monday, 9 November
Climate normal for this date — 60-year average.
Average high42°
Average low25°
Average precipitation0.04 in
Chance of precipitation27%
Record high63° (2016)
Record low-7° (1986)
Tue, 1041° / 24°0.04
41 °
Unionville, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high41°
Average low24°
Average precipitation0.04 in
Chance of precipitation22%
Record high62° (2025)
Record low-17° (1986)
Wed, 1141° / 23°0.03
41 °
Unionville, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high41°
Average low23°
Average precipitation0.03 in
Chance of precipitation20%
Record high63° (1990)
Record low-8° (2000)
Thu, 1242° / 24°0.03
42 °
Unionville, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high42°
Average low24°
Average precipitation0.03 in
Chance of precipitation20%
Record high67° (1999)
Record low-13° (1986)
Fri, 1342° / 25°0.04
42 °
Unionville, Friday, 13 November
Climate normal for this date — 60-year average.
Average high42°
Average low25°
Average precipitation0.04 in
Chance of precipitation22%
Record high67° (2025)
Record low-2° (2000)
Sat, 1441° / 25°0.03
41 °
Unionville, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high41°
Average low25°
Average precipitation0.03 in
Chance of precipitation23%
Record high63° (1999)
Record low2° (2000)
Sun, 1542° / 23°0.02
42 °
Unionville, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high42°
Average low23°
Average precipitation0.02 in
Chance of precipitation15%
Record high64° (2021)
Record low2° (2014)
Mon, 1641° / 24°0.04
41 °
Unionville, Monday, 16 November
Climate normal for this date — 60-year average.
Average high41°
Average low24°
Average precipitation0.04 in
Chance of precipitation27%
Record high58° (2001)
Record low2° (1961)
Tue, 1740° / 23°0.04
40 °
Unionville, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high40°
Average low23°
Average precipitation0.04 in
Chance of precipitation25%
Record high57° (1976)
Record low-8° (2022)
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 Unionville, 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 Unionville, 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.