Monthly outlook for Unionville, MT: average high 45.2°, average low 30.3°. That is 1.1° below the climate normal for October. Precipitation is expected on 4 days (about 0.4 inches), against a normal of 4 days and 0.7 inches. The warmest day looks like 8 November (62.9°), the coolest 24 October (22°).
45.2°/30.3°
Average high / low
−1.1°
Below normal
4 / 4
Wet days / normal
0.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
24 October – 2 November
42°
48.7°
-3.7°
3 November – 12 November
50.5°
43.5°
+3.9°
13 November – 22 November
at normal
39.3°
—
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).
Sun, 2540° / 23°0
40 °
Unionville, Sunday, 25 October
Overcast. High 40°, low 23°.
Pressure30.45 inHg
Wind4 mph N
Humidity89%
Visibility6.2 mi
Dew point25°
Mon, 2641° / 24°0
41 °
Unionville, Monday, 26 October
Overcast. High 41°, low 24°.
Pressure30.18 inHg
Wind2.1 mph NE
Humidity82%
Visibility6.2 mi
Dew point26°
Tue, 2745° / 29°0.04
45 °
Unionville, Tuesday, 27 October
Light rain. High 45°, low 29°.
Pressure29.91 inHg
Wind11.7 mph W
Humidity72%
Visibility6.2 mi
Dew point32°
Wed, 2845° / 27°0.03
45 °
Unionville, Wednesday, 28 October
Light rain. High 45°, low 27°.
Pressure30.03 inHg
Wind3.4 mph NE
Humidity66%
Visibility2.9 mi
Dew point29°
Thu, 2934° / 26°0
34 °
Unionville, Thursday, 29 October
Overcast. High 34°, low 26°.
Pressure30.12 inHg
Wind6.4 mph N
Humidity93%
Visibility—
Dew point30°
Fri, 3039° / 25°0.05
39 °
Unionville, Friday, 30 October
Light snow. High 39°, low 25°.
Pressure30.12 inHg
Wind4.3 mph NE
Humidity87%
Visibility—
Dew point29°
Sat, 3147° / 34°0.09
47 °
Unionville, Saturday, 31 October
Light snow. High 47°, low 34°.
Pressure29.80 inHg
Wind11.7 mph SW
Humidity67%
Visibility—
Dew point34°
Sun, 0144° / 28°0
44 °
Unionville, Sunday, 1 November
Mostly clear. High 44°, low 28°.
Pressure30.09 inHg
Wind13.6 mph SW
Humidity44%
Visibility—
Dew point19°
Mon, 0248° / 31°0
48 °
Unionville, Monday, 2 November
Overcast. High 48°, low 31°.
Pressure30.15 inHg
Wind6.8 mph SW
Humidity33%
Visibility—
Dew point17°
Tue, 0348° / 32°0
48 °
Unionville, Tuesday, 3 November
Overcast. High 48°, low 32°.
Pressure29.77 inHg
Wind13.6 mph W
Humidity32%
Visibility—
Dew point18°
Wed, 0446° / 31°0
46 °
Unionville, Wednesday, 4 November
Overcast. High 46°, low 31°.
Pressure29.88 inHg
Wind12.8 mph SW
Humidity41%
Visibility—
Dew point19°
Thu, 0549° / 33°0
49 °
Unionville, Thursday, 5 November
Overcast. High 49°, low 33°.
Pressure29.68 inHg
Wind19.6 mph SW
Humidity50%
Visibility—
Dew point26°
Fri, 0650° / 35°0.12
50 °
Unionville, Friday, 6 November
Light rain. High 50°, low 35°.
Pressure29.59 inHg
Wind25.8 mph SW
Humidity63%
Visibility—
Dew point32°
Sat, 0747° / 41°0.03
47 °
Unionville, Saturday, 7 November
Light rain. High 47°, low 41°.
Pressure29.85 inHg
Wind9 mph SW
Humidity90%
Visibility—
Dew point39°
Sun, 0863° / 44°0
63 °
Unionville, Sunday, 8 November
Overcast. High 63°, low 44°.
Pressure29.97 inHg
Wind9.9 mph SW
Humidity55%
Visibility—
Dew point39°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Wed, 1839° / 23°0.05
39 °
Unionville, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high39°
Average low23°
Average precipitation0.05 in
Chance of precipitation30%
Record high60° (2008)
Record low-11° (2022)
Thu, 1938° / 21°0.06
38 °
Unionville, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high38°
Average low21°
Average precipitation0.06 in
Chance of precipitation25%
Record high55° (1989)
Record low-7° (1978)
Fri, 2037° / 21°0.03
37 °
Unionville, Friday, 20 November
Climate normal for this date — 60-year average.
Average high37°
Average low21°
Average precipitation0.03 in
Chance of precipitation27%
Record high55° (1989)
Record low-10° (1985)
Sat, 2137° / 20°0.03
37 °
Unionville, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high37°
Average low20°
Average precipitation0.03 in
Chance of precipitation20%
Record high54° (2002)
Record low-8° (1985)
Sun, 2236° / 19°0.04
36 °
Unionville, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high36°
Average low19°
Average precipitation0.04 in
Chance of precipitation28%
Record high57° (2017)
Record low-13° (1985)
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.