Monthly outlook for Jimtown, MT: average high 64.2°, average low 42.8°. That is 4.3° above the climate normal for October. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 4 days and 0.7 inches. The warmest day looks like 19 October (76.6°), the coolest 13 October (33.4°).
64.2°/42.8°
Average high / low
+4.3°
Above normal
1 / 4
Wet days / normal
0.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
12 October – 21 October
63.2°
57.5°
+3.2°
22 October – 31 October
65.9°
53°
+7.2°
1 November – 10 November
at normal
47.7°
—
October records over 66 years
89.8°1 October 2011All-time high
-16.1°30 October 1991All-time low
Climate normals and records are computed from the nearest reference point — Lame Deer (6 mi).
Tue, 1353° / 33°0
53 °
Jimtown, Tuesday, 13 October
Overcast. High 53°, low 33°.
Pressure30.06 inHg
Wind2 mph SW
Humidity59%
Visibility6.2 mi
Dew point35°
Wed, 1462° / 36°0
62 °
Jimtown, Wednesday, 14 October
Partly cloudy. High 62°, low 36°.
Pressure30.12 inHg
Wind6.4 mph S
Humidity51%
Visibility6.2 mi
Dew point39°
Thu, 1555° / 41°0
55 °
Jimtown, Thursday, 15 October
Clear. High 55°, low 41°.
Pressure30.59 inHg
Wind8.8 mph N
Humidity42%
Visibility6.2 mi
Dew point27°
Fri, 1669° / 35°0
69 °
Jimtown, Friday, 16 October
Clear. High 69°, low 35°.
Pressure30.42 inHg
Wind8.1 mph S
Humidity34%
Visibility—
Dew point28°
Sat, 1773° / 41°0
73 °
Jimtown, Saturday, 17 October
Clear. High 73°, low 41°.
Pressure29.88 inHg
Wind10.2 mph W
Humidity26%
Visibility—
Dew point29°
Sun, 1872° / 51°0
72 °
Jimtown, Sunday, 18 October
Overcast. High 72°, low 51°.
Pressure29.83 inHg
Wind8.1 mph N
Humidity20%
Visibility—
Dew point24°
Mon, 1977° / 48°0
77 °
Jimtown, Monday, 19 October
Partly cloudy. High 77°, low 48°.
Pressure29.85 inHg
Wind18.6 mph SE
Humidity23%
Visibility—
Dew point27°
Tue, 2074° / 53°0
74 °
Jimtown, Tuesday, 20 October
Partly cloudy. High 74°, low 53°.
Pressure29.59 inHg
Wind10.8 mph N
Humidity22%
Visibility—
Dew point29°
Wed, 2154° / 42°0
54 °
Jimtown, Wednesday, 21 October
Overcast. High 54°, low 42°.
Pressure30.00 inHg
Wind14.2 mph NW
Humidity55%
Visibility—
Dew point35°
Thu, 2262° / 43°0
62 °
Jimtown, Thursday, 22 October
Clear. High 62°, low 43°.
Pressure30.09 inHg
Wind10.4 mph NW
Humidity42%
Visibility—
Dew point34°
Fri, 2370° / 41°0
70 °
Jimtown, Friday, 23 October
Clear. High 70°, low 41°.
Pressure30.09 inHg
Wind22.7 mph S
Humidity37%
Visibility—
Dew point35°
Sat, 2459° / 46°0.02
59 °
Jimtown, Saturday, 24 October
Light rain. High 59°, low 46°.
Pressure29.91 inHg
Wind20.5 mph N
Humidity32%
Visibility—
Dew point29°
Sun, 2566° / 41°0
66 °
Jimtown, Sunday, 25 October
Clear. High 66°, low 41°.
Pressure30.18 inHg
Wind7.3 mph S
Humidity24%
Visibility—
Dew point22°
Mon, 2671° / 47°0
71 °
Jimtown, Monday, 26 October
Clear. High 71°, low 47°.
Pressure29.97 inHg
Wind6.7 mph S
Humidity24%
Visibility—
Dew point27°
Tue, 2768° / 49°0
68 °
Jimtown, Tuesday, 27 October
Overcast. High 68°, low 49°.
Pressure29.80 inHg
Wind12.2 mph W
Humidity25%
Visibility—
Dew point24°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 2852° / 33°0.05
52 °
Jimtown, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high52°
Average low33°
Average precipitation0.05 in
Chance of precipitation25%
Record high76° (1990)
Record low7° (2023)
Thu, 2950° / 32°0.07
50 °
Jimtown, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high50°
Average low32°
Average precipitation0.07 in
Chance of precipitation33%
Record high74° (1968)
Record low-5° (1991)
Fri, 3050° / 30°0.04
50 °
Jimtown, Friday, 30 October
Climate normal for this date — 60-year average.
Average high50°
Average low30°
Average precipitation0.04 in
Chance of precipitation20%
Record high71° (1990)
Record low-16° (1991)
Sat, 3149° / 31°0.03
49 °
Jimtown, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high49°
Average low31°
Average precipitation0.03 in
Chance of precipitation18%
Record high74° (1999)
Record low4° (1996)
Sun, 0149° / 31°0.03
49 °
Jimtown, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high49°
Average low31°
Average precipitation0.03 in
Chance of precipitation17%
Record high72° (1965)
Record low1° (1991)
Mon, 0249° / 30°0.03
49 °
Jimtown, Monday, 2 November
Climate normal for this date — 60-year average.
Average high49°
Average low30°
Average precipitation0.03 in
Chance of precipitation23%
Record high74° (1965)
Record low-7° (1995)
Tue, 0349° / 30°0.02
49 °
Jimtown, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high49°
Average low30°
Average precipitation0.02 in
Chance of precipitation15%
Record high68° (2020)
Record low-14° (1991)
Wed, 0450° / 31°0.03
50 °
Jimtown, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high50°
Average low31°
Average precipitation0.03 in
Chance of precipitation13%
Record high71° (1975)
Record low6° (1995)
Thu, 0549° / 31°0.04
49 °
Jimtown, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high49°
Average low31°
Average precipitation0.04 in
Chance of precipitation25%
Record high73° (2020)
Record low4° (1961)
Fri, 0648° / 29°0.04
48 °
Jimtown, Friday, 6 November
Climate normal for this date — 60-year average.
Average high48°
Average low29°
Average precipitation0.04 in
Chance of precipitation20%
Record high73° (2010)
Record low8° (1991)
Sat, 0748° / 29°0.03
48 °
Jimtown, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high48°
Average low29°
Average precipitation0.03 in
Chance of precipitation27%
Record high72° (1999)
Record low1° (1991)
Sun, 0846° / 28°0.04
46 °
Jimtown, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high46°
Average low28°
Average precipitation0.04 in
Chance of precipitation23%
Record high74° (1999)
Record low3° (2000)
Mon, 0945° / 27°0.07
45 °
Jimtown, Monday, 9 November
Climate normal for this date — 60-year average.
Average high45°
Average low27°
Average precipitation0.07 in
Chance of precipitation23%
Record high67° (2016)
Record low-4° (1966)
Tue, 1044° / 26°0.05
44 °
Jimtown, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high44°
Average low26°
Average precipitation0.05 in
Chance of precipitation23%
Record high68° (2007)
Record low-17° (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 Jimtown, 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 Jimtown, 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.