Monthly outlook for Birney, MT: average high 56.4°, average low 39.4°. That is 2.2° below the climate normal for October. Precipitation is expected on 5 days (about 2.1 inches), against a normal of 4 days and 0.8 inches. The warmest day looks like 9 October (87.1°), the coolest 16 October (19.5°).
56.4°/39.4°
Average high / low
−2.2°
Below normal
5 / 4
Wet days / normal
2.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 October – 17 October
56.5°
60.8°
-2.4°
18 October – 27 October
56.2°
58.7°
-1.4°
28 October – 6 November
at normal
52°
—
October records over 66 years
92.3°1 October 2011All-time high
-16.1°30 October 1991All-time low
Fri, 0987° / 49°0
87 °
Birney, Friday, 9 October
Overcast. High 87°, low 49°.
Pressure29.62 inHg
Wind4.9 mph S
Humidity20%
Visibility6.2 mi
Dew point34°
Sat, 1066° / 47°0.06
66 °
Birney, Saturday, 10 October
Light rain. High 66°, low 47°.
Pressure29.62 inHg
Wind8.1 mph N
Humidity35%
Visibility6.2 mi
Dew point35°
Sun, 1146° / 40°0.17
46 °
Birney, Sunday, 11 October
Light rain. High 46°, low 40°.
Pressure30.00 inHg
Wind7.7 mph NE
Humidity81%
Visibility6.2 mi
Dew point38°
Mon, 1243° / 39°0.43
43 °
Birney, Monday, 12 October
Rain. High 43°, low 39°.
Pressure30.03 inHg
Wind9.8 mph N
Humidity87%
Visibility—
Dew point37°
Tue, 1348° / 34°0.01
48 °
Birney, Tuesday, 13 October
Light rain. High 48°, low 34°.
Pressure30.09 inHg
Wind5 mph NE
Humidity75%
Visibility—
Dew point36°
Wed, 1463° / 48°0
63 °
Birney, Wednesday, 14 October
Light rain. High 63°, low 48°.
Pressure29.53 inHg
Wind19.9 mph NW
Humidity47%
Visibility—
Dew point41°
Thu, 1547° / 33°1.3
47 °
Birney, Thursday, 15 October
Snow. High 47°, low 33°.
Pressure30.21 inHg
Wind21.5 mph NW
Humidity98%
Visibility—
Dew point34°
Fri, 1636° / 19°0
36 °
Birney, Friday, 16 October
Clear. High 36°, low 19°.
Pressure30.71 inHg
Wind6.1 mph NW
Humidity95%
Visibility—
Dew point30°
Sat, 1749° / 28°0
49 °
Birney, Saturday, 17 October
Mostly clear. High 49°, low 28°.
Pressure30.27 inHg
Wind18.9 mph S
Humidity82%
Visibility—
Dew point36°
Sun, 1853° / 42°0.02
53 °
Birney, Sunday, 18 October
Light rain. High 53°, low 42°.
Pressure30.00 inHg
Wind12.5 mph NW
Humidity55%
Visibility—
Dew point33°
Mon, 1964° / 42°0
64 °
Birney, Monday, 19 October
Clear. High 64°, low 42°.
Pressure30.00 inHg
Wind20.5 mph NW
Humidity31%
Visibility—
Dew point28°
Tue, 2063° / 46°0
63 °
Birney, Tuesday, 20 October
Mostly clear. High 63°, low 46°.
Pressure30.15 inHg
Wind13.3 mph NW
Humidity36%
Visibility—
Dew point32°
Wed, 2157° / 44°0
57 °
Birney, Wednesday, 21 October
Overcast. High 57°, low 44°.
Pressure30.09 inHg
Wind26.9 mph NW
Humidity37%
Visibility—
Dew point29°
Thu, 2254° / 38°0
54 °
Birney, Thursday, 22 October
Overcast. High 54°, low 38°.
Pressure30.18 inHg
Wind19.3 mph NW
Humidity30%
Visibility—
Dew point17°
Fri, 2346° / 36°0.07
46 °
Birney, Friday, 23 October
Light snow. High 46°, low 36°.
Pressure29.71 inHg
Wind15.2 mph NW
Humidity71%
Visibility—
Dew point37°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 2458° / 36°0.04
58 °
Birney, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high58°
Average low36°
Average precipitation0.04 in
Chance of precipitation23%
Record high78° (2007)
Record low17° (2020)
Sun, 2558° / 35°0.03
58 °
Birney, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high58°
Average low35°
Average precipitation0.03 in
Chance of precipitation17%
Record high79° (2017)
Record low-3° (2020)
Mon, 2656° / 35°0.05
56 °
Birney, Monday, 26 October
Climate normal for this date — 60-year average.
Average high56°
Average low35°
Average precipitation0.05 in
Chance of precipitation18%
Record high76° (1960)
Record low-13° (2020)
Tue, 2756° / 33°0.04
56 °
Birney, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high56°
Average low33°
Average precipitation0.04 in
Chance of precipitation23%
Record high77° (2016)
Record low4° (2023)
Wed, 2854° / 33°0.05
54 °
Birney, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high54°
Average low33°
Average precipitation0.05 in
Chance of precipitation25%
Record high78° (1990)
Record low6° (2023)
Thu, 2952° / 33°0.07
52 °
Birney, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high52°
Average low33°
Average precipitation0.07 in
Chance of precipitation32%
Record high75° (1968)
Record low-7° (1991)
Fri, 3052° / 31°0.04
52 °
Birney, Friday, 30 October
Climate normal for this date — 60-year average.
Average high52°
Average low31°
Average precipitation0.04 in
Chance of precipitation18%
Record high73° (1965)
Record low-16° (1991)
Sat, 3152° / 32°0.03
52 °
Birney, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high52°
Average low32°
Average precipitation0.03 in
Chance of precipitation17%
Record high77° (1999)
Record low1° (1991)
Sun, 0151° / 31°0.03
51 °
Birney, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high51°
Average low31°
Average precipitation0.03 in
Chance of precipitation13%
Record high75° (1965)
Record low3° (1991)
Mon, 0251° / 30°0.03
51 °
Birney, Monday, 2 November
Climate normal for this date — 60-year average.
Average high51°
Average low30°
Average precipitation0.03 in
Chance of precipitation25%
Record high76° (1965)
Record low-10° (1995)
Tue, 0351° / 31°0.02
51 °
Birney, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high51°
Average low31°
Average precipitation0.02 in
Chance of precipitation17%
Record high70° (2020)
Record low-7° (1995)
Wed, 0453° / 31°0.03
53 °
Birney, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high53°
Average low31°
Average precipitation0.03 in
Chance of precipitation13%
Record high74° (1975)
Record low4° (1995)
Thu, 0552° / 31°0.03
52 °
Birney, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high52°
Average low31°
Average precipitation0.03 in
Chance of precipitation25%
Record high73° (2010)
Record low4° (1973)
Fri, 0651° / 30°0.04
51 °
Birney, Friday, 6 November
Climate normal for this date — 60-year average.
Average high51°
Average low30°
Average precipitation0.04 in
Chance of precipitation20%
Record high75° (2010)
Record low8° (1991)
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 Birney, 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 Birney, 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.