Monthly outlook for Pinnacle, MT: average high 47.4°, average low 30°. That is 1.2° below the climate normal for October. Precipitation is expected on 4 days (about 0.8 inches), against a normal of 7 days and 1.7 inches. The warmest day looks like 9 October (65.2°), the coolest 13 October (19.8°).
47.4°/30°
Average high / low
−1.2°
Below normal
4 / 7
Wet days / normal
0.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 October – 18 October
46°
50.5°
-2.5°
19 October – 28 October
49.8°
46.7°
+1.7°
29 October – 7 November
at normal
40.2°
—
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).
Sat, 1045° / 28°0.03
45 °
Pinnacle, Saturday, 10 October
Snow. High 45°, low 28°.
Pressure29.80 inHg
Wind3 mph NE
Humidity72%
Visibility5.5 mi
Dew point28°
Sun, 1129° / 24°0.3
29 °
Pinnacle, Sunday, 11 October
Snow. High 29°, low 24°.
Pressure30.15 inHg
Wind6 mph NE
Humidity92%
Visibility2.3 mi
Dew point20°
Mon, 1236° / 24°0.18
36 °
Pinnacle, Monday, 12 October
Snow. High 36°, low 24°.
Pressure30.12 inHg
Wind2.8 mph E
Humidity90%
Visibility6.2 mi
Dew point21°
Tue, 1341° / 20°0
41 °
Pinnacle, Tuesday, 13 October
Partly cloudy. High 41°, low 20°.
Pressure30.12 inHg
Wind3 mph W
Humidity77%
Visibility—
Dew point28°
Wed, 1440° / 24°0.02
40 °
Pinnacle, Wednesday, 14 October
Light rain. High 40°, low 24°.
Pressure30.06 inHg
Wind4.6 mph SW
Humidity76%
Visibility—
Dew point29°
Thu, 1544° / 28°0.15
44 °
Pinnacle, Thursday, 15 October
Snow. High 44°, low 28°.
Pressure30.50 inHg
Wind5 mph E
Humidity48%
Visibility—
Dew point21°
Fri, 1651° / 26°0
51 °
Pinnacle, Friday, 16 October
Partly cloudy. High 51°, low 26°.
Pressure30.42 inHg
Wind5.5 mph W
Humidity54%
Visibility—
Dew point26°
Sat, 1756° / 32°0
56 °
Pinnacle, Saturday, 17 October
Clear. High 56°, low 32°.
Pressure30.18 inHg
Wind6.1 mph W
Humidity44%
Visibility—
Dew point28°
Sun, 1854° / 37°0
54 °
Pinnacle, Sunday, 18 October
Overcast. High 54°, low 37°.
Pressure30.06 inHg
Wind3.6 mph W
Humidity50%
Visibility—
Dew point31°
Mon, 1955° / 38°0
55 °
Pinnacle, Monday, 19 October
Overcast. High 55°, low 38°.
Pressure29.91 inHg
Wind5.4 mph W
Humidity48%
Visibility—
Dew point31°
Tue, 2042° / 37°0.11
42 °
Pinnacle, Tuesday, 20 October
Snow. High 42°, low 37°.
Pressure30.06 inHg
Wind5.2 mph E
Humidity84%
Visibility—
Dew point37°
Wed, 2145° / 31°0.03
45 °
Pinnacle, Wednesday, 21 October
Light snow. High 45°, low 31°.
Pressure30.33 inHg
Wind3.4 mph E
Humidity80%
Visibility—
Dew point33°
Thu, 2252° / 29°0
52 °
Pinnacle, Thursday, 22 October
Mostly clear. High 52°, low 29°.
Pressure30.15 inHg
Wind3.7 mph NE
Humidity59%
Visibility—
Dew point31°
Fri, 2353° / 32°0
53 °
Pinnacle, Friday, 23 October
Clear. High 53°, low 32°.
Pressure29.97 inHg
Wind3.6 mph E
Humidity54%
Visibility—
Dew point31°
Sat, 2452° / 32°0
52 °
Pinnacle, Saturday, 24 October
Clear. High 52°, low 32°.
Pressure30.00 inHg
Wind2.9 mph NE
Humidity54%
Visibility—
Dew point31°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Sat, 0738° / 26°0.17
38 °
Pinnacle, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high38°
Average low26°
Average precipitation0.17 in
Chance of precipitation53%
Record high56° (1999)
Record low0° (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 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.