Monthly outlook for Niwot, CO: average high 55.8°, average low 33.6°. That is 5.7° 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 16 November (66.1°), the coolest 22 November (29.5°).
55.8°/33.6°
Average high / low
+5.7°
Above normal
0 / 3
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
15 November – 24 November
56.5°
47.8°
+4.9°
25 November – 4 December
54.5°
42.1°
+6.9°
5 December – 14 December
at normal
40.5°
—
November records over 66 years
77.7°2 November 2025All-time high
-12.3°13 November 2014All-time low
Climate normals and records are computed from the nearest reference point — Longmont (6 mi).
Mon, 1666° / 37°0
66 °
Niwot, Monday, 16 November
Partly cloudy. High 66°, low 37°.
Pressure30.03 inHg
Wind2.6 mph E
Humidity36%
Visibility6.2 mi
Dew point29°
Tue, 1761° / 32°0
61 °
Niwot, Tuesday, 17 November
Partly cloudy. High 61°, low 32°.
Pressure29.80 inHg
Wind2 mph E
Humidity33%
Visibility6.2 mi
Dew point25°
Wed, 1855° / 34°0
55 °
Niwot, Wednesday, 18 November
Partly cloudy. High 55°, low 34°.
Pressure29.83 inHg
Wind6.1 mph W
Humidity37%
Visibility6.2 mi
Dew point17°
Thu, 1947° / 33°0
47 °
Niwot, Thursday, 19 November
Overcast. High 47°, low 33°.
Pressure30.18 inHg
Wind2.3 mph NW
Humidity56%
Visibility—
Dew point27°
Fri, 2057° / 33°0.04
57 °
Niwot, Friday, 20 November
Light rain. High 57°, low 33°.
Pressure29.80 inHg
Wind16.6 mph W
Humidity54%
Visibility—
Dew point27°
Sat, 2157° / 34°0
57 °
Niwot, Saturday, 21 November
Clear. High 57°, low 34°.
Pressure30.03 inHg
Wind7.9 mph NW
Humidity19%
Visibility—
Dew point10°
Sun, 2250° / 29°0
50 °
Niwot, Sunday, 22 November
Partly cloudy. High 50°, low 29°.
Pressure30.00 inHg
Wind4.4 mph E
Humidity19%
Visibility—
Dew point5°
Mon, 2356° / 35°0
56 °
Niwot, Monday, 23 November
Overcast. High 56°, low 35°.
Pressure30.00 inHg
Wind6.7 mph W
Humidity19%
Visibility—
Dew point9°
Tue, 2459° / 33°0
59 °
Niwot, Tuesday, 24 November
Mostly clear. High 59°, low 33°.
Pressure29.91 inHg
Wind7.5 mph W
Humidity12%
Visibility—
Dew point2°
Wed, 2558° / 32°0
58 °
Niwot, Wednesday, 25 November
Clear. High 58°, low 32°.
Pressure29.71 inHg
Wind22.2 mph W
Humidity14%
Visibility—
Dew point8°
Thu, 2653° / 30°0
53 °
Niwot, Thursday, 26 November
Mostly clear. High 53°, low 30°.
Pressure30.09 inHg
Wind10.9 mph W
Humidity17%
Visibility—
Dew point4°
Fri, 2754° / 35°0
54 °
Niwot, Friday, 27 November
Overcast. High 54°, low 35°.
Pressure30.09 inHg
Wind7.7 mph W
Humidity29%
Visibility—
Dew point19°
Sat, 2860° / 34°0.01
60 °
Niwot, Saturday, 28 November
Light rain. High 60°, low 34°.
Pressure29.47 inHg
Wind28.3 mph W
Humidity19%
Visibility—
Dew point15°
Sun, 2954° / 33°0
54 °
Niwot, Sunday, 29 November
Overcast. High 54°, low 33°.
Pressure29.97 inHg
Wind8.9 mph NW
Humidity34%
Visibility—
Dew point21°
Mon, 3047° / 31°0
47 °
Niwot, Monday, 30 November
Overcast. High 47°, low 31°.
Pressure30.21 inHg
Wind4.4 mph E
Humidity46%
Visibility—
Dew point23°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 0142° / 20°0.02
42 °
Niwot, 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 °
Niwot, 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)
Thu, 0342° / 21°0.03
42 °
Niwot, Thursday, 3 December
Climate normal for this date — 60-year average.
Average high42°
Average low21°
Average precipitation0.03 in
Chance of precipitation15%
Record high62° (2017)
Record low-1° (1978)
Fri, 0443° / 21°0.02
43 °
Niwot, Friday, 4 December
Climate normal for this date — 60-year average.
Average high43°
Average low21°
Average precipitation0.02 in
Chance of precipitation10%
Record high61° (1998)
Record low0° (2009)
Sat, 0542° / 20°0.03
42 °
Niwot, Saturday, 5 December
Climate normal for this date — 60-year average.
Average high42°
Average low20°
Average precipitation0.03 in
Chance of precipitation15%
Record high65° (2012)
Record low-12° (2013)
Sun, 0639° / 20°0.03
39 °
Niwot, Sunday, 6 December
Climate normal for this date — 60-year average.
Average high39°
Average low20°
Average precipitation0.03 in
Chance of precipitation18%
Record high56° (2003)
Record low-16° (1972)
Mon, 0740° / 20°0.04
40 °
Niwot, Monday, 7 December
Climate normal for this date — 60-year average.
Average high40°
Average low20°
Average precipitation0.04 in
Chance of precipitation17%
Record high59° (1987)
Record low-4° (1972)
Tue, 0840° / 19°0.04
40 °
Niwot, Tuesday, 8 December
Climate normal for this date — 60-year average.
Average high40°
Average low19°
Average precipitation0.04 in
Chance of precipitation23%
Record high58° (1981)
Record low-14° (1978)
Wed, 0940° / 18°0.04
40 °
Niwot, Wednesday, 9 December
Climate normal for this date — 60-year average.
Average high40°
Average low18°
Average precipitation0.04 in
Chance of precipitation17%
Record high59° (2015)
Record low-8° (1978)
Thu, 1041° / 19°0.02
41 °
Niwot, Thursday, 10 December
Climate normal for this date — 60-year average.
Average high41°
Average low19°
Average precipitation0.02 in
Chance of precipitation13%
Record high61° (1990)
Record low-12° (1972)
Fri, 1141° / 20°0.03
41 °
Niwot, Friday, 11 December
Climate normal for this date — 60-year average.
Average high41°
Average low20°
Average precipitation0.03 in
Chance of precipitation18%
Record high64° (2025)
Record low-12° (1972)
Sat, 1241° / 20°0.02
41 °
Niwot, Saturday, 12 December
Climate normal for this date — 60-year average.
Average high41°
Average low20°
Average precipitation0.02 in
Chance of precipitation12%
Record high62° (2017)
Record low-17° (1961)
Sun, 1340° / 19°0.03
40 °
Niwot, Sunday, 13 December
Climate normal for this date — 60-year average.
Average high40°
Average low19°
Average precipitation0.03 in
Chance of precipitation15%
Record high60° (2010)
Record low-10° (1961)
Mon, 1440° / 19°0.02
40 °
Niwot, Monday, 14 December
Climate normal for this date — 60-year average.
Average high40°
Average low19°
Average precipitation0.02 in
Chance of precipitation17%
Record high57° (2010)
Record low-4° (1972)
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 Niwot, 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 Niwot, 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.