Monthly outlook for Pinnacle, MT: average high 47.2°, average low 31.1°. That is 1.7° below the climate normal for October. Precipitation is expected on 7 days (about 2.9 inches), against a normal of 7 days and 1.7 inches. The warmest day looks like 8 October (67.7°), the coolest 13 October (21.8°).
47.2°/31.1°
Average high / low
−1.7°
Below normal
7 / 7
Wet days / normal
2.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 October – 17 October
47.2°
51°
-2.1°
18 October – 27 October
47.1°
47.3°
-0.1°
28 October – 6 November
at normal
40.6°
—
October records over 66 years
81.1°1 October 1992All-time high
-8°25 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Nimrod (9 mi).
Fri, 0966° / 38°0.01
66 °
Pinnacle, Friday, 9 October
Light rain. High 66°, low 38°.
Pressure29.50 inHg
Wind12.7 mph SW
Humidity34%
Visibility6.2 mi
Dew point32°
Sat, 1039° / 27°0.09
39 °
Pinnacle, Saturday, 10 October
Snow. High 39°, low 27°.
Pressure29.85 inHg
Wind5.1 mph NE
Humidity81%
Visibility6.2 mi
Dew point24°
Sun, 1127° / 25°0.14
27 °
Pinnacle, Sunday, 11 October
Light snow. High 27°, low 25°.
Pressure30.21 inHg
Wind8.1 mph NE
Humidity90%
Visibility5.1 mi
Dew point18°
Mon, 1241° / 25°0
41 °
Pinnacle, Monday, 12 October
Overcast. High 41°, low 25°.
Pressure30.12 inHg
Wind3.4 mph E
Humidity81%
Visibility—
Dew point28°
Tue, 1348° / 22°0
48 °
Pinnacle, Tuesday, 13 October
Clear. High 48°, low 22°.
Pressure29.97 inHg
Wind3.6 mph NW
Humidity61%
Visibility—
Dew point27°
Wed, 1440° / 36°0.19
40 °
Pinnacle, Wednesday, 14 October
Snow. High 40°, low 36°.
Pressure29.62 inHg
Wind5 mph W
Humidity98%
Visibility—
Dew point39°
Thu, 1542° / 31°0.05
42 °
Pinnacle, Thursday, 15 October
Snow. High 42°, low 31°.
Pressure30.24 inHg
Wind3.6 mph W
Humidity68%
Visibility—
Dew point30°
Fri, 1649° / 31°0
49 °
Pinnacle, Friday, 16 October
Partly cloudy. High 49°, low 31°.
Pressure30.39 inHg
Wind5 mph W
Humidity69%
Visibility—
Dew point33°
Sat, 1752° / 32°0
52 °
Pinnacle, Saturday, 17 October
Overcast. High 52°, low 32°.
Pressure30.21 inHg
Wind5 mph W
Humidity57%
Visibility—
Dew point31°
Sun, 1854° / 34°0
54 °
Pinnacle, Sunday, 18 October
Mostly clear. High 54°, low 34°.
Pressure30.12 inHg
Wind6.7 mph W
Humidity57%
Visibility—
Dew point33°
Mon, 1956° / 37°0
56 °
Pinnacle, Monday, 19 October
Clear. High 56°, low 37°.
Pressure30.12 inHg
Wind5.7 mph W
Humidity55%
Visibility—
Dew point34°
Tue, 2056° / 37°0
56 °
Pinnacle, Tuesday, 20 October
Mostly clear. High 56°, low 37°.
Pressure29.97 inHg
Wind8.7 mph W
Humidity48%
Visibility—
Dew point32°
Wed, 2145° / 36°1.47
45 °
Pinnacle, Wednesday, 21 October
Snow. High 45°, low 36°.
Pressure29.38 inHg
Wind14.2 mph SW
Humidity99%
Visibility—
Dew point40°
Thu, 2238° / 23°0.4
38 °
Pinnacle, Thursday, 22 October
Snow. High 38°, low 23°.
Pressure29.59 inHg
Wind3.6 mph W
Humidity83%
Visibility—
Dew point30°
Fri, 2335° / 27°0.52
35 °
Pinnacle, Friday, 23 October
Snow. High 35°, low 27°.
Pressure29.74 inHg
Wind3.9 mph E
Humidity95%
Visibility—
Dew point30°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 2446° / 32°0.1
46 °
Pinnacle, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high46°
Average low32°
Average precipitation0.1 in
Chance of precipitation38%
Record high62° (1992)
Record low7° (2020)
Sun, 2546° / 32°0.09
46 °
Pinnacle, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high46°
Average low32°
Average precipitation0.09 in
Chance of precipitation37%
Record high66° (2005)
Record low-8° (2020)
Mon, 2644° / 31°0.13
44 °
Pinnacle, Monday, 26 October
Climate normal for this date — 60-year average.
Average high44°
Average low31°
Average precipitation0.13 in
Chance of precipitation55%
Record high64° (1986)
Record low4° (2023)
Tue, 2743° / 30°0.12
43 °
Pinnacle, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high43°
Average low30°
Average precipitation0.12 in
Chance of precipitation45%
Record high61° (1998)
Record low2° (2023)
Wed, 2843° / 29°0.11
43 °
Pinnacle, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high43°
Average low29°
Average precipitation0.11 in
Chance of precipitation42%
Record high59° (1974)
Record low-2° (1971)
Thu, 2941° / 29°0.14
41 °
Pinnacle, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high41°
Average low29°
Average precipitation0.14 in
Chance of precipitation47%
Record high61° (1962)
Record low-5° (2019)
Fri, 3041° / 28°0.09
41 °
Pinnacle, Friday, 30 October
Climate normal for this date — 60-year average.
Average high41°
Average low28°
Average precipitation0.09 in
Chance of precipitation38%
Record high61° (1983)
Record low-2° (1991)
Sat, 3141° / 28°0.17
41 °
Pinnacle, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high41°
Average low28°
Average precipitation0.17 in
Chance of precipitation53%
Record high65° (2008)
Record low1° (2003)
Sun, 0141° / 28°0.15
41 °
Pinnacle, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high41°
Average low28°
Average precipitation0.15 in
Chance of precipitation48%
Record high59° (2008)
Record low2° (2006)
Mon, 0240° / 27°0.15
40 °
Pinnacle, Monday, 2 November
Climate normal for this date — 60-year average.
Average high40°
Average low27°
Average precipitation0.15 in
Chance of precipitation48%
Record high58° (1981)
Record low-7° (1991)
Tue, 0340° / 29°0.1
40 °
Pinnacle, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high40°
Average low29°
Average precipitation0.1 in
Chance of precipitation45%
Record high57° (1981)
Record low6° (1973)
Wed, 0440° / 29°0.19
40 °
Pinnacle, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high40°
Average low29°
Average precipitation0.19 in
Chance of precipitation58%
Record high53° (1964)
Record low5° (1967)
Thu, 0540° / 28°0.15
40 °
Pinnacle, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high40°
Average low28°
Average precipitation0.15 in
Chance of precipitation58%
Record high59° (1980)
Record low1° (1993)
Fri, 0639° / 26°0.16
39 °
Pinnacle, Friday, 6 November
Climate normal for this date — 60-year average.
Average high39°
Average low26°
Average precipitation0.16 in
Chance of precipitation55%
Record high59° (2010)
Record low5° (2017)
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 Pinnacle, 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 Pinnacle, 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.