Monthly outlook for Diamond City, MT: average high 38.4°, average low 27.1°. That is 1.7° above the climate normal for November. Precipitation is expected on 2 days (about 0.5 inches), against a normal of 5 days and 0.7 inches. The warmest day looks like 12 November (55.3°), the coolest 21 November (8.9°).
38.4°/27.1°
Average high / low
+1.7°
Above normal
2 / 5
Wet days / normal
0.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 November – 20 November
43.4°
37.3°
+3.4°
21 November – 30 November
30.1°
31.3°
-0.7°
1 December – 10 December
at normal
28.1°
—
November records over 66 years
65.5°1 November 2025All-time high
-21.1°23 November 1985All-time low
Climate normals and records are computed from the nearest reference point — Fort Logan (13 mi).
Thu, 1255° / 39°0
55 °
Diamond City, Thursday, 12 November
Overcast. High 55°, low 39°.
Pressure29.97 inHg
Wind6.6 mph S
Humidity36%
Visibility6.2 mi
Dew point24°
Fri, 1355° / 42°0
55 °
Diamond City, Friday, 13 November
Overcast. High 55°, low 42°.
Pressure29.65 inHg
Wind10.8 mph S
Humidity39%
Visibility6.2 mi
Dew point21°
Sat, 1451° / 37°0.01
51 °
Diamond City, Saturday, 14 November
Light rain. High 51°, low 37°.
Pressure29.56 inHg
Wind10.8 mph S
Humidity49%
Visibility6.2 mi
Dew point30°
Sun, 1545° / 34°0
45 °
Diamond City, Sunday, 15 November
Clear. High 45°, low 34°.
Pressure30.00 inHg
Wind11.6 mph S
Humidity66%
Visibility—
Dew point32°
Mon, 1648° / 35°0
48 °
Diamond City, Monday, 16 November
Partly cloudy. High 48°, low 35°.
Pressure29.91 inHg
Wind8.7 mph S
Humidity52%
Visibility—
Dew point28°
Tue, 1741° / 29°0
41 °
Diamond City, Tuesday, 17 November
Overcast. High 41°, low 29°.
Pressure29.80 inHg
Wind5 mph N
Humidity52%
Visibility—
Dew point22°
Wed, 1833° / 26°0.02
33 °
Diamond City, Wednesday, 18 November
Light snow. High 33°, low 26°.
Pressure29.85 inHg
Wind5.3 mph S
Humidity90%
Visibility—
Dew point29°
Thu, 1928° / 23°0.37
28 °
Diamond City, Thursday, 19 November
Snow. High 28°, low 23°.
Pressure29.88 inHg
Wind6 mph S
Humidity90%
Visibility—
Dew point23°
Fri, 2024° / 10°0.11
24 °
Diamond City, Friday, 20 November
Snow. High 24°, low 10°.
Pressure30.33 inHg
Wind7.8 mph NW
Humidity86%
Visibility—
Dew point19°
Sat, 2123° / 9°0
23 °
Diamond City, Saturday, 21 November
Overcast. High 23°, low 9°.
Pressure30.42 inHg
Wind5.4 mph S
Humidity90%
Visibility—
Dew point17°
Sun, 2223° / 13°0
23 °
Diamond City, Sunday, 22 November
Overcast. High 23°, low 13°.
Pressure30.27 inHg
Wind6.4 mph S
Humidity78%
Visibility—
Dew point14°
Mon, 2329° / 16°0
29 °
Diamond City, Monday, 23 November
Overcast. High 29°, low 16°.
Pressure30.18 inHg
Wind8.3 mph S
Humidity79%
Visibility—
Dew point19°
Tue, 2433° / 28°0
33 °
Diamond City, Tuesday, 24 November
Overcast. High 33°, low 28°.
Pressure30.03 inHg
Wind11.7 mph SW
Humidity93%
Visibility—
Dew point31°
Wed, 2533° / 24°0.01
33 °
Diamond City, Wednesday, 25 November
Light snow. High 33°, low 24°.
Pressure30.30 inHg
Wind10.4 mph S
Humidity83%
Visibility—
Dew point26°
Thu, 2639° / 30°0
39 °
Diamond City, Thursday, 26 November
Overcast. High 39°, low 30°.
Pressure30.00 inHg
Wind9.9 mph S
Humidity83%
Visibility—
Dew point31°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 2730° / 15°0.06
30 °
Diamond City, Friday, 27 November
Climate normal for this date — 60-year average.
Average high30°
Average low15°
Average precipitation0.06 in
Chance of precipitation30%
Record high45° (2021)
Record low-8° (2015)
Sat, 2830° / 16°0.05
30 °
Diamond City, Saturday, 28 November
Climate normal for this date — 60-year average.
Average high30°
Average low16°
Average precipitation0.05 in
Chance of precipitation33%
Record high55° (2021)
Record low-13° (1985)
Sun, 2929° / 13°0.04
29 °
Diamond City, Sunday, 29 November
Climate normal for this date — 60-year average.
Average high29°
Average low13°
Average precipitation0.04 in
Chance of precipitation35%
Record high48° (2021)
Record low-16° (2006)
Mon, 3029° / 14°0.04
29 °
Diamond City, Monday, 30 November
Climate normal for this date — 60-year average.
Average high29°
Average low14°
Average precipitation0.04 in
Chance of precipitation23%
Record high46° (2021)
Record low-18° (1985)
Tue, 0130° / 15°0.04
30 °
Diamond City, Tuesday, 1 December
Climate normal for this date — 60-year average.
Average high30°
Average low15°
Average precipitation0.04 in
Chance of precipitation30%
Record high58° (2021)
Record low-25° (1985)
Wed, 0231° / 14°0.08
31 °
Diamond City, Wednesday, 2 December
Climate normal for this date — 60-year average.
Average high31°
Average low14°
Average precipitation0.08 in
Chance of precipitation38%
Record high55° (2021)
Record low-19° (1985)
Thu, 0330° / 15°0.04
30 °
Diamond City, Thursday, 3 December
Climate normal for this date — 60-year average.
Average high30°
Average low15°
Average precipitation0.04 in
Chance of precipitation30%
Record high50° (2024)
Record low-10° (1972)
Fri, 0429° / 14°0.04
29 °
Diamond City, Friday, 4 December
Climate normal for this date — 60-year average.
Average high29°
Average low14°
Average precipitation0.04 in
Chance of precipitation27%
Record high48° (2024)
Record low-20° (1972)
Sat, 0528° / 13°0.05
28 °
Diamond City, Saturday, 5 December
Climate normal for this date — 60-year average.
Average high28°
Average low13°
Average precipitation0.05 in
Chance of precipitation32%
Record high51° (2023)
Record low-21° (2013)
Sun, 0627° / 11°0.05
27 °
Diamond City, Sunday, 6 December
Climate normal for this date — 60-year average.
Average high27°
Average low11°
Average precipitation0.05 in
Chance of precipitation30%
Record high51° (2023)
Record low-29° (2013)
Mon, 0726° / 11°0.03
26 °
Diamond City, Monday, 7 December
Climate normal for this date — 60-year average.
Average high26°
Average low11°
Average precipitation0.03 in
Chance of precipitation23%
Record high53° (2024)
Record low-30° (2013)
Tue, 0825° / 9°0.02
25 °
Diamond City, Tuesday, 8 December
Climate normal for this date — 60-year average.
Average high25°
Average low9°
Average precipitation0.02 in
Chance of precipitation15%
Record high48° (2020)
Record low-30° (2009)
Wed, 0926° / 10°0.03
26 °
Diamond City, Wednesday, 9 December
Climate normal for this date — 60-year average.
Average high26°
Average low10°
Average precipitation0.03 in
Chance of precipitation28%
Record high45° (2025)
Record low-27° (2009)
Thu, 1028° / 13°0.04
28 °
Diamond City, Thursday, 10 December
Climate normal for this date — 60-year average.
Average high28°
Average low13°
Average precipitation0.04 in
Chance of precipitation32%
Record high50° (2025)
Record low-29° (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 Diamond City, 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 Diamond City, 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.