Monthly Climate Summary

December 2020 Summary

Snow Shower 32°F

Data is available from January 2005 to present. The latest summary is available within the first week of each month.

Monthly Climate Summary

Observed averages, totals, and departures from normal

Average Temperature

32.4°F

Normal: 30.5°F
Departure: + 1.9°F

Total Precipitation

3.26 in

Normal: 3.26 in
Departure: -0.53 in

Total Snowfall

25.7 in

Normal: 13.3 in
Departure: + 12.4 in

December 2020 Daily Summary
Day Weather High Temperature Low Temperature Precipitation Snowfall
1st Rain Shower 58°F 38°F 0.16 in 0.0 in
2nd Light Snow 40°F 34°F 0.00 in 0.0 in
3rd mostly cloudy 47°F 27°F 0.00 in 0.0 in
4th Overcast 51°F 35°F 0.00 in 0.0 in
5th Rain 41°F 35°F 0.14 in 0.0 in
6th mostly cloudy 35°F 28°F 0.00 in 0.0 in
7th mostly cloudy 33°F 26°F 0.00 in 0.0 in
8th Snow flurries 29°F 24°F 0.00 in 0.0 in
9th Light Snow 36°F 23°F 0.03 in 0.5 in
10th mostly cloudy 43°F 33°F 0.00 in 0.0 in
11th mostly cloudy 49°F 27°F 0.00 in 0.0 in
12th Rain 48°F 29°F 0.01 in 0.0 in
13th Rain 51°F 38°F 0.01 in 0.0 in
14th Snow Shower 38°F 33°F 0.01 in 0.0 in
15th Sunny 34°F 22°F 0.00 in 0.0 in
16th Snow Shower 22°F 14°F 0.20 in 2.0 in
17th Snow 24°F 16°F 0.92 in 22.0 in
18th partly cloudy 25°F 6°F 0.00 in 0.0 in
19th mostly cloudy 25°F -2°F 0.00 in 0.0 in
20th Light Snow 34°F 17°F 0.01 in 0.2 in
21st mostly cloudy 40°F 31°F 0.00 in 0.0 in
22nd mostly cloudy 39°F 28°F 0.00 in 0.0 in
23rd mostly cloudy 39°F 24°F 0.00 in 0.0 in
24th Rain 52°F 35°F 0.33 in 0.0 in
25th Rain and Snow 57°F 33°F 0.88 in 1.0 in
26th mostly cloudy 33°F 21°F 0.00 in 0.0 in
27th partly cloudy 36°F 22°F 0.00 in 0.0 in
28th Light Snow 41°F 30°F 0.00 in 0.0 in
29th partly cloudy 37°F 19°F 0.00 in 0.0 in
30th Rain 35°F 17°F 0.03 in 0.0 in
31st Overcast 39°F 34°F 0.00 in 0.0 in

Degree Day Summary

Heating and cooling degree days (base 65°F)

Heating Degree Days

1,011.0

Normal: 1,069.0
Departure: -58.0

Cooling Degree Days

0.0

Normal: 0.0
Departure: + 0.0

All-time Monthly Records

Highest and lowest observed extremes for this month

Record High

72°F

Set in 2015

Record Low

-22°F

Set in 1969

Record Precipitation

3.16 in

Set in 1952

Record Snowfall

19.7 in

Set in 2020

Climate Context

How this month compares to typical conditions

Monthly climate summaries compare observed weather to long‑term normals. Positive temperature departures indicate warmer‑than‑normal conditions, while negative departures reflect cooler‑than‑normal patterns. Precipitation and snowfall departures help highlight unusually wet, dry, or snowy months across Colonie.