Monthly outlook for Kirby, MT: average high 56.1°, average low 39.2°. That is 0.5° below the climate normal for October. Precipitation is expected on 3 days (about 0.7 inches), against a normal of 4 days and 0.9 inches. The warmest day looks like 17 October (75.2°), the coolest 16 October (31.8°).
56.1°/39.2°
Average high / low
−0.5°
Below normal
3 / 4
Wet days / normal
0.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
13 October – 22 October
59.1°
58.3°
+0.5°
23 October – 1 November
51.1°
53.2°
-1.2°
2 November – 11 November
at normal
48°
—
October records over 66 years
89.2°1 October 2011All-time high
-12.3°30 October 1991All-time low
Wed, 1457° / 37°0
57 °
Kirby, Wednesday, 14 October
Overcast. High 57°, low 37°.
Pressure30.09 inHg
Wind6.3 mph SE
Humidity47%
Visibility6.2 mi
Dew point35°
Thu, 1550° / 36°0
50 °
Kirby, Thursday, 15 October
Overcast. High 50°, low 36°.
Pressure30.65 inHg
Wind10.9 mph NW
Humidity59%
Visibility6.2 mi
Dew point29°
Fri, 1666° / 32°0
66 °
Kirby, Friday, 16 October
Clear. High 66°, low 32°.
Pressure30.45 inHg
Wind8.1 mph SE
Humidity31%
Visibility6.2 mi
Dew point19°
Sat, 1775° / 50°0
75 °
Kirby, Saturday, 17 October
Partly cloudy. High 75°, low 50°.
Pressure29.91 inHg
Wind1.2 mph N
Humidity19%
Visibility6.2 mi
Dew point20°
Sun, 1866° / 47°0
66 °
Kirby, Sunday, 18 October
Clear. High 66°, low 47°.
Pressure29.94 inHg
Wind8.5 mph SE
Humidity32%
Visibility—
Dew point31°
Mon, 1972° / 49°0
72 °
Kirby, Monday, 19 October
Clear. High 72°, low 49°.
Pressure29.85 inHg
Wind9.7 mph SE
Humidity21%
Visibility—
Dew point25°
Tue, 2060° / 43°0
60 °
Kirby, Tuesday, 20 October
Overcast. High 60°, low 43°.
Pressure29.77 inHg
Wind14.9 mph NW
Humidity52%
Visibility—
Dew point34°
Wed, 2143° / 37°0.28
43 °
Kirby, Wednesday, 21 October
Snow. High 43°, low 37°.
Pressure30.09 inHg
Wind10 mph NW
Humidity84%
Visibility—
Dew point35°
Thu, 2251° / 36°0
51 °
Kirby, Thursday, 22 October
Overcast. High 51°, low 36°.
Pressure29.83 inHg
Wind12.2 mph NW
Humidity56%
Visibility—
Dew point30°
Fri, 2339° / 35°0.31
39 °
Kirby, Friday, 23 October
Snow. High 39°, low 35°.
Pressure30.21 inHg
Wind21.2 mph NW
Humidity99%
Visibility—
Dew point35°
Sat, 2450° / 32°0
50 °
Kirby, Saturday, 24 October
Clear. High 50°, low 32°.
Pressure30.30 inHg
Wind12 mph W
Humidity44%
Visibility—
Dew point24°
Sun, 2549° / 39°0
49 °
Kirby, Sunday, 25 October
Mostly clear. High 49°, low 39°.
Pressure30.47 inHg
Wind12.2 mph NW
Humidity46%
Visibility—
Dew point26°
Mon, 2657° / 35°0
57 °
Kirby, Monday, 26 October
Clear. High 57°, low 35°.
Pressure30.03 inHg
Wind15.4 mph SE
Humidity43%
Visibility—
Dew point28°
Tue, 2762° / 43°0.01
62 °
Kirby, Tuesday, 27 October
Light rain. High 62°, low 43°.
Pressure29.59 inHg
Wind22.2 mph NW
Humidity29%
Visibility—
Dew point27°
Wed, 2849° / 38°0.11
49 °
Kirby, Wednesday, 28 October
Snow. High 49°, low 38°.
Pressure30.12 inHg
Wind21.3 mph NW
Humidity58%
Visibility—
Dew point30°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 2951° / 33°0.09
51 °
Kirby, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high51°
Average low33°
Average precipitation0.09 in
Chance of precipitation35%
Record high74° (1968)
Record low-3° (1991)
Fri, 3051° / 30°0.04
51 °
Kirby, Friday, 30 October
Climate normal for this date — 60-year average.
Average high51°
Average low30°
Average precipitation0.04 in
Chance of precipitation23%
Record high71° (1965)
Record low-12° (1991)
Sat, 3150° / 31°0.04
50 °
Kirby, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high50°
Average low31°
Average precipitation0.04 in
Chance of precipitation23%
Record high75° (1999)
Record low4° (1972)
Sun, 0150° / 31°0.06
50 °
Kirby, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high50°
Average low31°
Average precipitation0.06 in
Chance of precipitation20%
Record high73° (1965)
Record low3° (1991)
Mon, 0249° / 31°0.04
49 °
Kirby, Monday, 2 November
Climate normal for this date — 60-year average.
Average high49°
Average low31°
Average precipitation0.04 in
Chance of precipitation23%
Record high74° (1965)
Record low-5° (1995)
Tue, 0349° / 31°0.03
49 °
Kirby, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high49°
Average low31°
Average precipitation0.03 in
Chance of precipitation18%
Record high73° (2020)
Record low-3° (1995)
Wed, 0451° / 31°0.03
51 °
Kirby, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high51°
Average low31°
Average precipitation0.03 in
Chance of precipitation22%
Record high70° (1983)
Record low8° (1995)
Thu, 0550° / 32°0.04
50 °
Kirby, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high50°
Average low32°
Average precipitation0.04 in
Chance of precipitation27%
Record high73° (2020)
Record low6° (1961)
Fri, 0649° / 30°0.05
49 °
Kirby, Friday, 6 November
Climate normal for this date — 60-year average.
Average high49°
Average low30°
Average precipitation0.05 in
Chance of precipitation22%
Record high73° (2010)
Record low6° (1971)
Sat, 0749° / 30°0.04
49 °
Kirby, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high49°
Average low30°
Average precipitation0.04 in
Chance of precipitation23%
Record high74° (1999)
Record low3° (2017)
Sun, 0847° / 29°0.04
47 °
Kirby, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high47°
Average low29°
Average precipitation0.04 in
Chance of precipitation23%
Record high74° (1999)
Record low7° (1966)
Mon, 0946° / 28°0.07
46 °
Kirby, Monday, 9 November
Climate normal for this date — 60-year average.
Average high46°
Average low28°
Average precipitation0.07 in
Chance of precipitation23%
Record high68° (2016)
Record low-5° (1966)
Tue, 1045° / 27°0.06
45 °
Kirby, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high45°
Average low27°
Average precipitation0.06 in
Chance of precipitation27%
Record high71° (2025)
Record low-16° (1986)
Wed, 1144° / 26°0.02
44 °
Kirby, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high44°
Average low26°
Average precipitation0.02 in
Chance of precipitation17%
Record high67° (1990)
Record low-9° (1986)
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 Kirby, 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 Kirby, 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.