Monthly Climate Summary
December 2018 Summary
34°F
Data is available from 2005 to present. The latest summary is available the first week of each month.
Monthly Climate Summary
Average Temperature
31.5°F
Normal:
30.5°F
Departure:
+ 0.9°F
Total Precipitation
2.79 in
Normal:
3.26 in
Departure:
-0.47 in
Total Snowfall
3.2 in
Normal:
13.3 in
Departure:
-10.1 in
Warmest Day
59°F
December 21st
Coldest Day
11°F
December 11th
Wettest Day
0.70 in
December 21st
Snowiest Day
2.0 in
December 13th
| Day | Weather | High Temperature | Low Temperature | Precipitation | Snowfall |
|---|---|---|---|---|---|
| 1st |  |
40°F | 29°F | 0.14 in | 0.0 in |
| 2nd |  |
42°F | 34°F | 0.64 in | 0.0 in |
| 3rd | |
50°F | 34°F | 0.02 in | 0.0 in |
| 4th |  |
34°F | 24°F | 0.00 in | 0.0 in |
| 5th |  |
34°F | 17°F | 0.00 in | 0.0 in |
| 6th |  |
38°F | 19°F | 0.00 in | 0.0 in |
| 7th | |
34°F | 17°F | 0.00 in | 0.0 in |
| 8th | |
29°F | 12°F | 0.00 in | 0.0 in |
| 9th | |
36°F | 18°F | 0.00 in | 0.0 in |
| 10th | |
36°F | 18°F | 0.00 in | 0.0 in |
| 11th | |
31°F | 11°F | 0.00 in | 0.0 in |
| 12th |  |
36°F | 18°F | 0.00 in | 0.0 in |
| 13th |  |
30°F | 18°F | 0.07 in | 2.0 in |
| 14th | |
42°F | 29°F | 0.00 in | 0.0 in |
| 15th | |
47°F | 32°F | 0.00 in | 0.0 in |
| 16th |  |
37°F | 28°F | 0.34 in | 0.2 in |
| 17th | |
40°F | 29°F | 0.00 in | 0.0 in |
| 18th |  |
29°F | 20°F | 0.00 in | 0.0 in |
| 19th | |
35°F | 16°F | 0.00 in | 0.0 in |
| 20th | |
42°F | 19°F | 0.19 in | 0.0 in |
| 21st | |
59°F | 36°F | 0.70 in | 0.0 in |
| 22nd |  |
55°F | 34°F | 0.13 in | 0.0 in |
| 23rd |  |
34°F | 30°F | 0.00 in | 0.0 in |
| 24th | |
41°F | 30°F | 0.04 in | 0.8 in |
| 25th | |
34°F | 24°F | 0.00 in | 0.0 in |
| 26th |  |
33°F | 22°F | 0.00 in | 0.0 in |
| 27th | |
34°F | 25°F | 0.00 in | 0.0 in |
| 28th | |
48°F | 32°F | 0.06 in | 0.0 in |
| 29th | |
47°F | 26°F | 0.00 in | 0.0 in |
| 30th | |
33°F | 23°F | 0.01 in | 0.2 in |
| 31st | |
40°F | 26°F | 0.45 in | 0.0 in |
Legend and Icon Key
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 Degree Days
1,040.0
Cooling Degree Days
0.0
Climate Activity Summary
Days at or
Above 90°F
Days Above Freezing
Days That Stayed Below Freezing
Freezing Nights (Low Below 32°F)
Days with Precipitation
Days with
Snowfall
Wind Summary
Average Wind Speed
1.4 mph
Peak Wind Gust
30 mph
Dominant Wind Direction
NW
All-time Monthly Records
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
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.