Monthly outlook for Niwot, CO: average high 54.5°, average low 33.4°. That is 4° above the climate normal for November. Precipitation is expected on 1 day (about 0.2 inches), against a normal of 3 days and 0.6 inches. The warmest day looks like 12 November (68.2°), the coolest 24 November (21.9°).
54.5°/33.4°
Average high / low
+4°
Above normal
1 / 3
Wet days / normal
0.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
12 November – 21 November
56.2°
49°
+4°
22 November – 1 December
51.5°
43.1°
+4.7°
2 December – 11 December
at normal
41.2°
—
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).
Fri, 1364° / 40°0
64 °
Niwot, Friday, 13 November
Overcast. High 64°, low 40°.
Pressure29.80 inHg
Wind2.3 mph E
Humidity34%
Visibility6.2 mi
Dew point25°
Sat, 1450° / 39°0
50 °
Niwot, Saturday, 14 November
Overcast. High 50°, low 39°.
Pressure29.80 inHg
Wind3.4 mph E
Humidity70%
Visibility6.2 mi
Dew point36°
Sun, 1553° / 34°0
53 °
Niwot, Sunday, 15 November
Partly cloudy. High 53°, low 34°.
Pressure30.12 inHg
Wind1.4 mph S
Humidity62%
Visibility6.2 mi
Dew point36°
Mon, 1658° / 32°0
58 °
Niwot, Monday, 16 November
Clear. High 58°, low 32°.
Pressure30.00 inHg
Wind1.5 mph E
Humidity42%
Visibility6.2 mi
Dew point29°
Tue, 1758° / 33°0
58 °
Niwot, Tuesday, 17 November
Overcast. High 58°, low 33°.
Pressure29.85 inHg
Wind3.8 mph E
Humidity39%
Visibility—
Dew point28°
Wed, 1852° / 35°0
52 °
Niwot, Wednesday, 18 November
Overcast. High 52°, low 35°.
Pressure29.71 inHg
Wind14.8 mph S
Humidity35%
Visibility—
Dew point22°
Thu, 1954° / 34°0
54 °
Niwot, Thursday, 19 November
Overcast. High 54°, low 34°.
Pressure29.94 inHg
Wind5.8 mph W
Humidity17%
Visibility—
Dew point6°
Fri, 2057° / 35°0
57 °
Niwot, Friday, 20 November
Overcast. High 57°, low 35°.
Pressure29.83 inHg
Wind5.2 mph NW
Humidity12%
Visibility—
Dew point1°
Sat, 2148° / 30°0.01
48 °
Niwot, Saturday, 21 November
Light snow. High 48°, low 30°.
Pressure29.91 inHg
Wind8.8 mph N
Humidity63%
Visibility—
Dew point28°
Sun, 2250° / 30°0.03
50 °
Niwot, Sunday, 22 November
Snow. High 50°, low 30°.
Pressure29.71 inHg
Wind9 mph W
Humidity59%
Visibility—
Dew point28°
Mon, 2341° / 24°0.15
41 °
Niwot, Monday, 23 November
Snow. High 41°, low 24°.
Pressure29.94 inHg
Wind6.2 mph E
Humidity41%
Visibility—
Dew point18°
Tue, 2448° / 22°0
48 °
Niwot, Tuesday, 24 November
Partly cloudy. High 48°, low 22°.
Pressure29.97 inHg
Wind4.3 mph W
Humidity55%
Visibility—
Dew point22°
Wed, 2550° / 28°0
50 °
Niwot, Wednesday, 25 November
Overcast. High 50°, low 28°.
Pressure30.12 inHg
Wind6 mph W
Humidity43%
Visibility—
Dew point23°
Thu, 2663° / 35°0
63 °
Niwot, Thursday, 26 November
Partly cloudy. High 63°, low 35°.
Pressure29.94 inHg
Wind9 mph W
Humidity22%
Visibility—
Dew point17°
Fri, 2756° / 41°0
56 °
Niwot, Friday, 27 November
Mostly clear. High 56°, low 41°.
Pressure29.97 inHg
Wind21.7 mph W
Humidity18%
Visibility—
Dew point10°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 2842° / 20°0.03
42 °
Niwot, 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 °
Niwot, 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 °
Niwot, 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 °
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)
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.