Monthly outlook for Boneau, MT: average high 53.4°, average low 37°. That is 0.4° above the climate normal for October. Precipitation is expected on 4 days (about 0.4 inches), against a normal of 3 days and 0.6 inches. The warmest day looks like 9 October (80°), the coolest 16 October (26°).
53.4°/37°
Average high / low
+0.4°
Above normal
4 / 3
Wet days / normal
0.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 October – 17 October
53.4°
53.1°
+0.1°
18 October – 27 October
53.6°
50.7°
+1.6°
28 October – 6 November
at normal
44.1°
—
October records over 66 years
83.1°1 October 2011All-time high
-10.5°29 October 1991All-time low
Climate normals and records are computed from the nearest reference point — Parker School (7 mi).
Fri, 0980° / 51°0.02
80 °
Boneau, Friday, 9 October
Light rain. High 80°, low 51°.
Pressure29.44 inHg
Wind14.4 mph SW
Humidity23%
Visibility6.2 mi
Dew point35°
Sat, 1056° / 38°0.1
56 °
Boneau, Saturday, 10 October
Light rain. High 56°, low 38°.
Pressure29.88 inHg
Wind9.9 mph N
Humidity72%
Visibility6.0 mi
Dew point32°
Sun, 1138° / 35°0.02
38 °
Boneau, Sunday, 11 October
Light snow. High 38°, low 35°.
Pressure30.27 inHg
Wind7.8 mph N
Humidity77%
Visibility6.2 mi
Dew point23°
Mon, 1245° / 33°0
45 °
Boneau, Monday, 12 October
Overcast. High 45°, low 33°.
Pressure30.21 inHg
Wind8.7 mph SW
Humidity63%
Visibility—
Dew point29°
Tue, 1357° / 33°0
57 °
Boneau, Tuesday, 13 October
Clear. High 57°, low 33°.
Pressure30.06 inHg
Wind15.5 mph SW
Humidity49%
Visibility—
Dew point29°
Wed, 1452° / 35°0.04
52 °
Boneau, Wednesday, 14 October
Light snow. High 52°, low 35°.
Pressure29.62 inHg
Wind23 mph NW
Humidity45%
Visibility—
Dew point30°
Thu, 1534° / 29°0.11
34 °
Boneau, Thursday, 15 October
Light snow. High 34°, low 29°.
Pressure30.39 inHg
Wind19.4 mph NW
Humidity71%
Visibility—
Dew point24°
Fri, 1645° / 26°0
45 °
Boneau, Friday, 16 October
Clear. High 45°, low 26°.
Pressure30.45 inHg
Wind8 mph SE
Humidity55%
Visibility—
Dew point23°
Sat, 1754° / 35°0
54 °
Boneau, Saturday, 17 October
Partly cloudy. High 54°, low 35°.
Pressure30.09 inHg
Wind10.6 mph SW
Humidity42%
Visibility—
Dew point23°
Sun, 1861° / 41°0
61 °
Boneau, Sunday, 18 October
Mostly clear. High 61°, low 41°.
Pressure29.91 inHg
Wind15 mph W
Humidity37%
Visibility—
Dew point26°
Mon, 1952° / 37°0
52 °
Boneau, Monday, 19 October
Overcast. High 52°, low 37°.
Pressure30.33 inHg
Wind8.9 mph NE
Humidity43%
Visibility—
Dew point24°
Tue, 2061° / 41°0
61 °
Boneau, Tuesday, 20 October
Overcast. High 61°, low 41°.
Pressure29.94 inHg
Wind14.2 mph SW
Humidity35%
Visibility—
Dew point27°
Wed, 2160° / 46°0.09
60 °
Boneau, Wednesday, 21 October
Light rain. High 60°, low 46°.
Pressure29.50 inHg
Wind30.3 mph W
Humidity45%
Visibility—
Dew point38°
Thu, 2246° / 38°0
46 °
Boneau, Thursday, 22 October
Overcast. High 46°, low 38°.
Pressure29.80 inHg
Wind26 mph NW
Humidity42%
Visibility—
Dew point22°
Fri, 2341° / 33°0
41 °
Boneau, Friday, 23 October
Partly cloudy. High 41°, low 33°.
Pressure30.00 inHg
Wind9.6 mph SW
Humidity52%
Visibility—
Dew point24°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 2450° / 34°0.04
50 °
Boneau, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high50°
Average low34°
Average precipitation0.04 in
Chance of precipitation20%
Record high73° (2007)
Record low6° (2020)
Sun, 2550° / 34°0.03
50 °
Boneau, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high50°
Average low34°
Average precipitation0.03 in
Chance of precipitation17%
Record high71° (1990)
Record low-4° (2020)
Mon, 2648° / 34°0.05
48 °
Boneau, Monday, 26 October
Climate normal for this date — 60-year average.
Average high48°
Average low34°
Average precipitation0.05 in
Chance of precipitation27%
Record high69° (1960)
Record low5° (2023)
Tue, 2748° / 32°0.05
48 °
Boneau, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high48°
Average low32°
Average precipitation0.05 in
Chance of precipitation27%
Record high66° (2024)
Record low6° (2023)
Wed, 2847° / 31°0.04
47 °
Boneau, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high47°
Average low31°
Average precipitation0.04 in
Chance of precipitation23%
Record high67° (1968)
Record low-1° (1991)
Thu, 2945° / 30°0.04
45 °
Boneau, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high45°
Average low30°
Average precipitation0.04 in
Chance of precipitation25%
Record high69° (1968)
Record low-10° (1991)
Fri, 3045° / 29°0.02
45 °
Boneau, Friday, 30 October
Climate normal for this date — 60-year average.
Average high45°
Average low29°
Average precipitation0.02 in
Chance of precipitation17%
Record high64° (1987)
Record low-8° (1991)
Sat, 3144° / 30°0.06
44 °
Boneau, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high44°
Average low30°
Average precipitation0.06 in
Chance of precipitation28%
Record high67° (2008)
Record low-8° (1984)
Sun, 0144° / 29°0.03
44 °
Boneau, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high44°
Average low29°
Average precipitation0.03 in
Chance of precipitation13%
Record high64° (2025)
Record low-17° (1984)
Mon, 0244° / 29°0.03
44 °
Boneau, Monday, 2 November
Climate normal for this date — 60-year average.
Average high44°
Average low29°
Average precipitation0.03 in
Chance of precipitation17%
Record high63° (1981)
Record low-15° (1991)
Tue, 0344° / 30°0.04
44 °
Boneau, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high44°
Average low30°
Average precipitation0.04 in
Chance of precipitation18%
Record high62° (1981)
Record low-2° (1991)
Wed, 0445° / 31°0.04
45 °
Boneau, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high45°
Average low31°
Average precipitation0.04 in
Chance of precipitation25%
Record high65° (2021)
Record low3° (2017)
Thu, 0543° / 29°0.06
43 °
Boneau, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high43°
Average low29°
Average precipitation0.06 in
Chance of precipitation27%
Record high65° (1975)
Record low-8° (2003)
Fri, 0641° / 27°0.03
41 °
Boneau, Friday, 6 November
Climate normal for this date — 60-year average.
Average high41°
Average low27°
Average precipitation0.03 in
Chance of precipitation18%
Record high64° (2010)
Record low-1° (1971)
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 Boneau, 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 Boneau, 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.