Monthly outlook for Unionville, MT: average high 54.2°, average low 34.6°. That is 2.1° above the climate normal for October. Precipitation is expected on 1 day (about 1.1 inches), against a normal of 4 days and 0.7 inches. The warmest day looks like 20 October (64.6°), the coolest 27 October (25.1°).
54.2°/34.6°
Average high / low
+2.1°
Above normal
1 / 4
Wet days / normal
1.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
19 October – 28 October
53.2°
52.8°
+0.2°
29 October – 7 November
55.8°
46°
+5.5°
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, 2065° / 34°0
65 °
Unionville, Tuesday, 20 October
Partly cloudy. High 65°, low 34°.
Pressure30.12 inHg
Wind2.5 mph NE
Humidity47%
Visibility6.2 mi
Dew point36°
Wed, 2161° / 34°0
61 °
Unionville, Wednesday, 21 October
Partly cloudy. High 61°, low 34°.
Pressure30.06 inHg
Wind4 mph NE
Humidity52%
Visibility3.3 mi
Dew point38°
Thu, 2264° / 38°0
64 °
Unionville, Thursday, 22 October
Mostly clear. High 64°, low 38°.
Pressure29.94 inHg
Wind3.9 mph NE
Humidity58%
Visibility1.2 mi
Dew point43°
Fri, 2351° / 34°1.07
51 °
Unionville, Friday, 23 October
Snow. High 51°, low 34°.
Pressure29.74 inHg
Wind1.7 mph NW
Humidity96%
Visibility2.2 mi
Dew point50°
Sat, 2445° / 29°0.02
45 °
Unionville, Saturday, 24 October
Light rain. High 45°, low 29°.
Pressure30.33 inHg
Wind6 mph E
Humidity74%
Visibility—
Dew point30°
Sun, 2545° / 28°0
45 °
Unionville, Sunday, 25 October
Mostly clear. High 45°, low 28°.
Pressure30.42 inHg
Wind5 mph SW
Humidity68%
Visibility—
Dew point27°
Mon, 2642° / 29°0
42 °
Unionville, Monday, 26 October
Overcast. High 42°, low 29°.
Pressure30.36 inHg
Wind7.6 mph N
Humidity44%
Visibility—
Dew point18°
Tue, 2744° / 25°0
44 °
Unionville, Tuesday, 27 October
Mostly clear. High 44°, low 25°.
Pressure30.47 inHg
Wind5.3 mph NE
Humidity54%
Visibility—
Dew point22°
Wed, 2853° / 31°0
53 °
Unionville, Wednesday, 28 October
Clear. High 53°, low 31°.
Pressure30.15 inHg
Wind5.8 mph S
Humidity38%
Visibility—
Dew point22°
Thu, 2957° / 39°0
57 °
Unionville, Thursday, 29 October
Overcast. High 57°, low 39°.
Pressure29.88 inHg
Wind6.2 mph SW
Humidity31%
Visibility—
Dew point22°
Fri, 3057° / 41°0
57 °
Unionville, Friday, 30 October
Overcast. High 57°, low 41°.
Pressure29.80 inHg
Wind5.9 mph SW
Humidity27%
Visibility—
Dew point20°
Sat, 3153° / 43°0
53 °
Unionville, Saturday, 31 October
Light rain. High 53°, low 43°.
Pressure29.85 inHg
Wind9.8 mph W
Humidity39%
Visibility—
Dew point26°
Sun, 0156° / 39°0
56 °
Unionville, Sunday, 1 November
Partly cloudy. High 56°, low 39°.
Pressure30.09 inHg
Wind10.9 mph W
Humidity36%
Visibility—
Dew point25°
Mon, 0256° / 38°0
56 °
Unionville, Monday, 2 November
Overcast. High 56°, low 38°.
Pressure30.15 inHg
Wind7.4 mph SW
Humidity31%
Visibility—
Dew point21°
Tue, 0354° / 41°0
54 °
Unionville, Tuesday, 3 November
Overcast. High 54°, low 41°.
Pressure29.91 inHg
Wind5.4 mph SW
Humidity40%
Visibility—
Dew point27°
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.