Monthly Climate Summary

December 2017 Summary

Light Snow 34°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

24.3°F

Normal: 30.5°F
Departure: -6.2°F

Total Precipitation

1.53 in

Normal: 3.26 in
Departure: -1.73 in

Total Snowfall

10.5 in

Normal: 13.3 in
Departure: -2.8 in

Warmest Day

52°F

December 5th

Coldest Day

-6°F

December 28th

Wettest Day

0.45 in

December 23rd

Snowiest Day

5.0 in

December 25th

December 2017 Daily Summary
Day Weather High Temperature Low Temperature Precipitation Snowfall
1st Rain Shower 44°F 31°F 0.01 in 0.0 in
2nd Mostly Cloudy 41°F 28°F 0.00 in 0.0 in
3rd Mostly Cloudy 45°F 27°F 0.00 in 0.0 in
4th Overcast 38°F 23°F 0.00 in 0.0 in
5th Rain 52°F 37°F 0.21 in 0.0 in
6th Rain Shower 51°F 29°F 0.18 in 0.0 in
7th Snow Shower 40°F 27°F 0.00 in 0.0 in
8th Snow Shower 37°F 21°F 0.00 in 0.0 in
9th Snow 33°F 27°F 0.12 in 3.0 in
10th Partly Cloudy 36°F 20°F 0.00 in 0.0 in
11th Mostly Cloudy 35°F 24°F 0.00 in 0.0 in
12th Snow 38°F 21°F 0.14 in 1.0 in
13th Snow Shower 21°F 14°F 0.00 in 0.0 in
14th Snow Shower 21°F 9°F 0.02 in 0.2 in
15th Mostly Cloudy 23°F 5°F 0.00 in 0.0 in
16th Mostly Cloudy 31°F 11°F 0.00 in 0.0 in
17th Partly Cloudy 26°F 7°F 0.00 in 0.0 in
18th Overcast 34°F 18°F 0.00 in 0.0 in
19th Rain Shower 48°F 34°F 0.03 in 0.0 in
20th Snow Shower 41°F 30°F 0.00 in 0.0 in
21st Mostly Sunny 30°F 21°F 0.00 in 0.0 in
22nd Light Snow 25°F 19°F 0.12 in 0.8 in
23rd Rain 35°F 25°F 0.45 in 0.0 in
24th Snow Shower 35°F 26°F 0.00 in 0.0 in
25th Snow Shower 33°F 14°F 0.25 in 5.0 in
26th Partly Cloudy 23°F 4°F 0.00 in 0.0 in
27th Partly Cloudy 17°F -5°F 0.00 in 0.0 in
28th Mostly Sunny 7°F -6°F 0.00 in 0.0 in
29th Mostly Cloudy 13°F -6°F 0.00 in 0.0 in
30th Light Snow 17°F -1°F 0.00 in 0.5 in
31st Mostly Cloudy 7°F -4°F 0.00 in 0.0 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

1,261.5

Normal: 1,069.0
Departure: + 192.5

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

18

Days That Stayed Below Freezing

13

Freezing Nights (Low Below 32°F)

29

Days with Precipitation

10

Days with
Snowfall

6

Wind Summary

Monthly wind averages, peak gusts, and dominant direction

Average Wind Speed

1.3 mph

Peak Wind Gust

32 mph

Dominant Wind Direction

NW

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.