Monthly Climate Summary

December 2025 Summary

Light Snow 29°F

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

Monthly Climate Summary

Observed averages, totals, and departures from normal

Average Temperature

25.4°F

Normal: 30.5°F
Departure: -5.1°F

Total Precipitation

2.93 in

Normal: 3.26 in
Departure: -0.33 in

Total Snowfall

15.9 in

Normal: 13.3 in
Departure: + 2.6 in

Warmest Day

54°F

December 19th

Coldest Day

-3°F

December 5th

Wettest Day

0.83 in

December 19th

Snowiest Day

7.0 in

December 2nd

December 2025 Daily Summary
Day Weather High Temperature Low Temperature Precipitation Snowfall
1st Partly Cloudy 38°F 20°F 0.00 in 0.0 in
2nd Snow 31°F 21°F 0.57 in 7.0 in
3rd Partly Cloudy 31°F 21°F 0.00 in 0.0 in
4th Snow Shower 36°F 9°F 0.02 in 0.2 in
5th Mostly Cloudy 24°F -3°F 0.00 in 0.0 in
6th Mostly Sunny 36°F 22°F 0.00 in 0.0 in
7th Overcast 38°F 28°F 0.00 in 0.0 in
8th Partly Cloudy 28°F 8°F 0.00 in 0.0 in
9th Mostly Cloudy 27°F 1°F 0.00 in 0.0 in
10th Snow 34°F 27°F 0.03 in 0.5 in
11th Mostly Cloudy 35°F 19°F 0.00 in 0.0 in
12th Mostly Cloudy 32°F 18°F 0.00 in 0.0 in
13th Snow Shower 31°F 21°F 0.00 in 0.0 in
14th Snow Shower 27°F 13°F 0.01 in 0.2 in
15th Mostly Cloudy 24°F 8°F 0.00 in 0.0 in
16th Mostly Sunny 32°F 13°F 0.00 in 0.0 in
17th Overcast 42°F 20°F 0.00 in 0.0 in
18th Partly Cloudy 45°F 24°F 0.00 in 0.0 in
19th Rain 54°F 29°F 0.83 in 0.0 in
20th Partly Cloudy 33°F 27°F 0.00 in 0.0 in
21st Mostly Cloudy 36°F 26°F 0.00 in 0.0 in
22nd Mostly Sunny 32°F 21°F 0.00 in 0.0 in
23rd Drizzle 36°F 26°F 0.00 in 0.0 in
24th Rain Shower 38°F 24°F 0.02 in 0.0 in
25th Mostly Cloudy 37°F 16°F 0.00 in 0.0 in
26th Snow 16°F 10°F 0.47 in 4.5 in
27th Snow 23°F 10°F 0.15 in 1.5 in
28th Rain 32°F 6°F 0.15 in 0.0 in
29th Snow 42°F 25°F 0.65 in 0.0 in
30th Snow Shower 25°F 19°F 0.02 in 1.2 in
31st Snow Shower 31°F 20°F 0.01 in 0.8 in
Legend and Icon Key
Warmest High
Coldest Low
Wettest Day
Snowiest Day
Sunny Mostly Sunny Partly Cloudy Mostly Cloudy Overcast Rain Light Rain Rain Shower Drizzle Freezing Rain Snow Light Snow Snow Shower Snow Flurries Sleet Rain & Snow Wintry Mix Thunderstorm Haze

Degree Day Summary

Heating and cooling degree days (base 65°F)

Heating Degree Days

1,227.5

Normal: 1,069.0
Departure: + 158.5

Cooling Degree Days

0.0

Normal: 0.0
Departure: + 0.0

Climate Activity Summary

Key temperature and precipitation patterns for the month

Days at or
Above 90°F

0

Days Above Freezing

15

Days That Stayed Below Freezing

16

Freezing Nights (Low Below 32°F)

31

Days with Precipitation

12

Days with
Snowfall

8

Wind Summary

Monthly wind averages, peak gusts, and dominant direction

Average Wind Speed

2.3 mph

Peak Wind Gust

35 mph

Dominant Wind Direction

W

All-time Monthly Records

Highest and lowest observed extremes for this month

Warmest Day

72°F

December 24th, 2015

Coldest Day

-22°F

December 25th, 1969

Wettest Day

3.16 in

December 11th, 1952

Snowiest Day

19.7 in

December 17th, 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.