Monthly outlook for Bonner, MT: average high 50.7°, average low 30.5°. That is 4.1° below the climate normal for October. Precipitation is expected on 6 days (about 0.7 inches), against a normal of 4 days and 0.8 inches. The warmest day looks like 8 October (72.8°), the coolest 16 October (20.2°).
50.7°/30.5°
Average high / low
−4.1°
Below normal
6 / 4
Wet days / normal
0.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
7 October – 16 October
50.3°
58.8°
-4.7°
17 October – 26 October
51.3°
55.3°
-2.2°
27 October – 5 November
at normal
48.6°
—
October records over 66 years
86.5°3 October 2010All-time high
-3.6°25 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Clinton (10 mi).
Thu, 0873° / 34°0
73 °
Bonner, Thursday, 8 October
Overcast. High 73°, low 34°.
Pressure30.06 inHg
Wind3.7 mph SW
Humidity29%
Visibility6.2 mi
Dew point26°
Fri, 0965° / 36°0.01
65 °
Bonner, Friday, 9 October
Light rain. High 65°, low 36°.
Pressure29.62 inHg
Wind6.2 mph W
Humidity33%
Visibility6.2 mi
Dew point33°
Sat, 1046° / 33°0.06
46 °
Bonner, Saturday, 10 October
Light rain. High 46°, low 33°.
Pressure29.74 inHg
Wind5.3 mph W
Humidity56%
Visibility6.2 mi
Dew point27°
Sun, 1131° / 26°0.11
31 °
Bonner, Sunday, 11 October
Light snow. High 31°, low 26°.
Pressure30.18 inHg
Wind10 mph E
Humidity89%
Visibility4.6 mi
Dew point17°
Mon, 1241° / 24°0.02
41 °
Bonner, Monday, 12 October
Light snow. High 41°, low 24°.
Pressure30.15 inHg
Wind5 mph NE
Humidity77%
Visibility—
Dew point27°
Tue, 1353° / 29°0
53 °
Bonner, Tuesday, 13 October
Clear. High 53°, low 29°.
Pressure30.06 inHg
Wind5 mph E
Humidity49%
Visibility—
Dew point26°
Wed, 1441° / 32°0.05
41 °
Bonner, Wednesday, 14 October
Snow. High 41°, low 32°.
Pressure29.83 inHg
Wind6 mph NW
Humidity77%
Visibility—
Dew point31°
Thu, 1539° / 25°0.12
39 °
Bonner, Thursday, 15 October
Snow. High 39°, low 25°.
Pressure30.39 inHg
Wind3 mph NE
Humidity66%
Visibility—
Dew point25°
Fri, 1646° / 20°0
46 °
Bonner, Friday, 16 October
Mostly clear. High 46°, low 20°.
Pressure30.50 inHg
Wind2.6 mph S
Humidity57%
Visibility—
Dew point23°
Sat, 1751° / 26°0
51 °
Bonner, Saturday, 17 October
Overcast. High 51°, low 26°.
Pressure30.24 inHg
Wind2.8 mph SW
Humidity43%
Visibility—
Dew point21°
Sun, 1858° / 32°0
58 °
Bonner, Sunday, 18 October
Overcast. High 58°, low 32°.
Pressure30.06 inHg
Wind9.5 mph W
Humidity38%
Visibility—
Dew point23°
Mon, 1955° / 34°0
55 °
Bonner, Monday, 19 October
Overcast. High 55°, low 34°.
Pressure30.21 inHg
Wind3.5 mph E
Humidity49%
Visibility—
Dew point28°
Tue, 2056° / 35°0
56 °
Bonner, Tuesday, 20 October
Overcast. High 56°, low 35°.
Pressure30.15 inHg
Wind4.1 mph SW
Humidity40%
Visibility—
Dew point25°
Wed, 2147° / 37°0.22
47 °
Bonner, Wednesday, 21 October
Snow. High 47°, low 37°.
Pressure29.80 inHg
Wind19 mph W
Humidity76%
Visibility—
Dew point39°
Thu, 2241° / 30°0.13
41 °
Bonner, Thursday, 22 October
Snow. High 41°, low 30°.
Pressure29.97 inHg
Wind16.5 mph W
Humidity52%
Visibility—
Dew point21°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 2354° / 35°0.06
54 °
Bonner, Friday, 23 October
Climate normal for this date — 60-year average.
Average high54°
Average low35°
Average precipitation0.06 in
Chance of precipitation35%
Record high70° (1960)
Record low13° (1975)
Sat, 2454° / 34°0.06
54 °
Bonner, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high54°
Average low34°
Average precipitation0.06 in
Chance of precipitation27%
Record high70° (2007)
Record low6° (1975)
Sun, 2553° / 33°0.06
53 °
Bonner, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high53°
Average low33°
Average precipitation0.06 in
Chance of precipitation30%
Record high70° (2005)
Record low-4° (2020)
Mon, 2652° / 33°0.07
52 °
Bonner, Monday, 26 October
Climate normal for this date — 60-year average.
Average high52°
Average low33°
Average precipitation0.07 in
Chance of precipitation37%
Record high69° (1986)
Record low-2° (2020)
Tue, 2751° / 32°0.05
51 °
Bonner, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high51°
Average low32°
Average precipitation0.05 in
Chance of precipitation33%
Record high66° (2024)
Record low7° (1975)
Wed, 2851° / 32°0.07
51 °
Bonner, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high51°
Average low32°
Average precipitation0.07 in
Chance of precipitation30%
Record high67° (2008)
Record low14° (2023)
Thu, 2949° / 31°0.05
49 °
Bonner, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high49°
Average low31°
Average precipitation0.05 in
Chance of precipitation27%
Record high67° (2008)
Record low5° (2019)
Fri, 3049° / 30°0.04
49 °
Bonner, Friday, 30 October
Climate normal for this date — 60-year average.
Average high49°
Average low30°
Average precipitation0.04 in
Chance of precipitation22%
Record high68° (2008)
Record low8° (1996)
Sat, 3148° / 31°0.06
48 °
Bonner, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high48°
Average low31°
Average precipitation0.06 in
Chance of precipitation28%
Record high66° (2014)
Record low2° (1996)
Sun, 0148° / 31°0.07
48 °
Bonner, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high48°
Average low31°
Average precipitation0.07 in
Chance of precipitation30%
Record high67° (2025)
Record low3° (1984)
Mon, 0248° / 31°0.07
48 °
Bonner, Monday, 2 November
Climate normal for this date — 60-year average.
Average high48°
Average low31°
Average precipitation0.07 in
Chance of precipitation35%
Record high64° (1981)
Record low4° (1991)
Tue, 0347° / 31°0.03
47 °
Bonner, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high47°
Average low31°
Average precipitation0.03 in
Chance of precipitation22%
Record high64° (2020)
Record low-3° (1973)
Wed, 0447° / 32°0.07
47 °
Bonner, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high47°
Average low32°
Average precipitation0.07 in
Chance of precipitation40%
Record high62° (1980)
Record low-7° (1973)
Thu, 0547° / 31°0.07
47 °
Bonner, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high47°
Average low31°
Average precipitation0.07 in
Chance of precipitation37%
Record high65° (2020)
Record low-1° (1961)
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 Bonner, 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 Bonner, 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.