Monthly outlook for Longmont, CO: average high 56.4°, average low 35.9°. That is 2.9° above the climate normal for November. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 3 days and 0.6 inches. The warmest day looks like 9 November (71.3°), the coolest 15 November (31.5°).
56.4°/35.9°
Average high / low
+2.9°
Above normal
0 / 3
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
3 November – 12 November
58.8°
52.2°
+3.7°
13 November – 22 November
52.5°
48.7°
+2.1°
23 November – 2 December
at normal
42.7°
—
November records over 66 years
77.7°2 November 2025All-time high
-12.3°13 November 2014All-time low
Wed, 0456° / 38°0
56 °
Longmont, Wednesday, 4 November
Overcast. High 56°, low 38°.
Pressure29.91 inHg
Wind2 mph SE
Humidity54%
Visibility6.2 mi
Dew point35°
Thu, 0557° / 32°0
57 °
Longmont, Thursday, 5 November
Clear. High 57°, low 32°.
Pressure30.06 inHg
Wind3.4 mph SE
Humidity39%
Visibility6.2 mi
Dew point28°
Fri, 0659° / 37°0
59 °
Longmont, Friday, 6 November
Overcast. High 59°, low 37°.
Pressure30.12 inHg
Wind4 mph SE
Humidity39%
Visibility6.2 mi
Dew point31°
Sat, 0761° / 33°0
61 °
Longmont, Saturday, 7 November
Mostly clear. High 61°, low 33°.
Pressure30.18 inHg
Wind2.2 mph E
Humidity39%
Visibility6.2 mi
Dew point31°
Sun, 0860° / 39°0
60 °
Longmont, Sunday, 8 November
Clear. High 60°, low 39°.
Pressure30.24 inHg
Wind3.3 mph W
Humidity43%
Visibility—
Dew point31°
Mon, 0971° / 39°0
71 °
Longmont, Monday, 9 November
Clear. High 71°, low 39°.
Pressure29.97 inHg
Wind9.7 mph E
Humidity21%
Visibility—
Dew point22°
Tue, 1062° / 39°0
62 °
Longmont, Tuesday, 10 November
Overcast. High 62°, low 39°.
Pressure30.00 inHg
Wind6.1 mph NE
Humidity30%
Visibility—
Dew point23°
Wed, 1159° / 41°0
59 °
Longmont, Wednesday, 11 November
Overcast. High 59°, low 41°.
Pressure30.00 inHg
Wind11.4 mph NE
Humidity25%
Visibility—
Dew point20°
Thu, 1248° / 36°0
48 °
Longmont, Thursday, 12 November
Overcast. High 48°, low 36°.
Pressure30.09 inHg
Wind5.4 mph E
Humidity56%
Visibility—
Dew point29°
Fri, 1352° / 32°0
52 °
Longmont, Friday, 13 November
Overcast. High 52°, low 32°.
Pressure30.03 inHg
Wind5.5 mph N
Humidity57%
Visibility—
Dew point30°
Sat, 1455° / 32°0
55 °
Longmont, Saturday, 14 November
Clear. High 55°, low 32°.
Pressure30.15 inHg
Wind6.1 mph NE
Humidity39%
Visibility—
Dew point24°
Sun, 1554° / 31°0
54 °
Longmont, Sunday, 15 November
Clear. High 54°, low 31°.
Pressure30.18 inHg
Wind3.5 mph E
Humidity43%
Visibility—
Dew point26°
Mon, 1653° / 32°0
53 °
Longmont, Monday, 16 November
Overcast. High 53°, low 32°.
Pressure30.09 inHg
Wind5.1 mph E
Humidity37%
Visibility—
Dew point23°
Tue, 1749° / 35°0
49 °
Longmont, Tuesday, 17 November
Overcast. High 49°, low 35°.
Pressure30.00 inHg
Wind8.8 mph SE
Humidity58%
Visibility—
Dew point29°
Wed, 1852° / 34°0
52 °
Longmont, Wednesday, 18 November
Overcast. High 52°, low 34°.
Pressure29.97 inHg
Wind8.1 mph SE
Humidity64%
Visibility—
Dew point34°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 1948° / 26°0.04
48 °
Longmont, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high48°
Average low26°
Average precipitation0.04 in
Chance of precipitation18%
Record high73° (2007)
Record low0° (2022)
Fri, 2048° / 25°0.06
48 °
Longmont, Friday, 20 November
Climate normal for this date — 60-year average.
Average high48°
Average low25°
Average precipitation0.06 in
Chance of precipitation15%
Record high65° (2003)
Record low2° (2000)
Sat, 2147° / 24°0.04
47 °
Longmont, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high47°
Average low24°
Average precipitation0.04 in
Chance of precipitation22%
Record high65° (2012)
Record low5° (1964)
Sun, 2247° / 24°0.03
47 °
Longmont, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high47°
Average low24°
Average precipitation0.03 in
Chance of precipitation18%
Record high66° (2002)
Record low3° (1975)
Mon, 2345° / 24°0.04
45 °
Longmont, Monday, 23 November
Climate normal for this date — 60-year average.
Average high45°
Average low24°
Average precipitation0.04 in
Chance of precipitation22%
Record high68° (2017)
Record low5° (2007)
Tue, 2446° / 23°0.03
46 °
Longmont, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high46°
Average low23°
Average precipitation0.03 in
Chance of precipitation17%
Record high66° (2017)
Record low1° (1993)
Wed, 2545° / 23°0.02
45 °
Longmont, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high45°
Average low23°
Average precipitation0.02 in
Chance of precipitation18%
Record high66° (1990)
Record low-3° (1993)
Thu, 2642° / 22°0.07
42 °
Longmont, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high42°
Average low22°
Average precipitation0.07 in
Chance of precipitation27%
Record high67° (2017)
Record low4° (1975)
Fri, 2740° / 20°0.06
40 °
Longmont, Friday, 27 November
Climate normal for this date — 60-year average.
Average high40°
Average low20°
Average precipitation0.06 in
Chance of precipitation30%
Record high68° (2017)
Record low2° (1976)
Sat, 2842° / 20°0.03
42 °
Longmont, Saturday, 28 November
Climate normal for this date — 60-year average.
Average high42°
Average low20°
Average precipitation0.03 in
Chance of precipitation17%
Record high62° (2021)
Record low-10° (1976)
Sun, 2941° / 20°0.03
41 °
Longmont, Sunday, 29 November
Climate normal for this date — 60-year average.
Average high41°
Average low20°
Average precipitation0.03 in
Chance of precipitation17%
Record high66° (2021)
Record low0° (1979)
Mon, 3041° / 20°0.02
41 °
Longmont, Monday, 30 November
Climate normal for this date — 60-year average.
Average high41°
Average low20°
Average precipitation0.02 in
Chance of precipitation17%
Record high61° (1995)
Record low-7° (2006)
Tue, 0142° / 20°0.02
42 °
Longmont, Tuesday, 1 December
Climate normal for this date — 60-year average.
Average high42°
Average low20°
Average precipitation0.02 in
Chance of precipitation10%
Record high70° (2021)
Record low-1° (1985)
Wed, 0243° / 21°0.02
43 °
Longmont, Wednesday, 2 December
Climate normal for this date — 60-year average.
Average high43°
Average low21°
Average precipitation0.02 in
Chance of precipitation12%
Record high63° (2021)
Record low-3° (1985)
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 Longmont, CO 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 Longmont, CO 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.