Monthly Climate Summary

September 2025 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

63.5°F

Normal: 63.6°F
Departure: -0.1°F

Total Precipitation

5.42 in

Normal: 3.73 in
Departure: + 1.69 in

Total Snowfall

0.0 in

Normal: 0.0 in
Departure: + 0.0 in

Warmest Day

81°F

September 28th

Coldest Day

38°F

September 21st

Wettest Day

4.00 in

September 25th

Snowiest Day

0.0 in

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September 2025 Daily Summary
Day Weather High Temperature Low Temperature Precipitation Snowfall
1st Mostly Cloudy 74°F 52°F 0.00 in 0.0 in
2nd Sunny 77°F 53°F 0.00 in 0.0 in
3rd Partly Cloudy 77°F 53°F 0.00 in 0.0 in
4th Rain Shower 78°F 56°F 0.04 in 0.0 in
5th Rain Shower 77°F 60°F 0.02 in 0.0 in
6th Rain Shower 71°F 60°F 0.29 in 0.0 in
7th Rain Shower 70°F 50°F 0.00 in 0.0 in
8th Sunny 69°F 44°F 0.00 in 0.0 in
9th Sunny 72°F 45°F 0.00 in 0.0 in
10th Sunny 73°F 46°F 0.00 in 0.0 in
11th Sunny 77°F 49°F 0.00 in 0.0 in
12th Sunny 76°F 53°F 0.00 in 0.0 in
13th Mostly Cloudy 76°F 51°F 0.00 in 0.0 in
14th Partly Cloudy 80°F 59°F 0.00 in 0.0 in
15th Sunny 78°F 56°F 0.00 in 0.0 in
16th Mostly Cloudy 76°F 51°F 0.00 in 0.0 in
17th Partly Cloudy 73°F 50°F 0.00 in 0.0 in
18th Sunny 79°F 50°F 0.00 in 0.0 in
19th Sunny 75°F 57°F 0.00 in 0.0 in
20th Mostly Sunny 67°F 44°F 0.00 in 0.0 in
21st Partly Cloudy 69°F 38°F 0.00 in 0.0 in
22nd Partly Cloudy 72°F 50°F 0.00 in 0.0 in
23rd Rain 72°F 60°F 0.38 in 0.0 in
24th Rain 68°F 65°F 0.69 in 0.0 in
25th Rain 71°F 63°F 4.00 in 0.0 in
26th Mostly Cloudy 73°F 59°F 0.00 in 0.0 in
27th Partly Cloudy 73°F 55°F 0.00 in 0.0 in
28th Mostly Cloudy 81°F 59°F 0.00 in 0.0 in
29th Partly Cloudy 74°F 51°F 0.00 in 0.0 in
30th Sunny 72°F 52°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

68.5

Normal: 66.0
Departure: + 2.5

Cooling Degree Days

24.0

Normal: 23.0
Departure: + 1.0

Climate Activity Summary

Key temperature and precipitation patterns for the month

Days at or
Above 90°F

0

Days Above Freezing

30

Days That Stayed Below Freezing

0

Freezing Nights (Low Below 32°F)

0

Days with Precipitation

6

Days with
Snowfall

0

Wind Summary

Monthly wind averages, peak gusts, and dominant direction

Average Wind Speed

0.7 mph

Peak Wind Gust

18 mph

Dominant Wind Direction

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All-time Monthly Records

Highest and lowest observed extremes for this month

Warmest Day

100°F

September 2nd, 1953

Coldest Day

24°F

September 27th, 1947

Wettest Day

5.60 in

September 16th, 1999

Snowiest Day

0.0 in

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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.