Monthly Climate Summary

September 2009 Summary

Mostly Cloudy 32°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

59.2°F

Normal: 63.6°F
Departure: -4.4°F

Total Precipitation

1.74 in

Normal: 3.73 in
Departure: -1.99 in

Total Snowfall

0.0 in

Normal: 0.0 in
Departure: + 0.0 in

Warmest Day

81°F

September 4th

Coldest Day

35°F

September 26th

Wettest Day

1.07 in

September 27th

Snowiest Day

0.0 in

----

September 2009 Daily Summary
Day Weather High Temperature Low Temperature Precipitation Snowfall
1st Sunny 73°F 45°F 0.00 in 0.0 in
2nd Sunny 77°F 47°F 0.00 in 0.0 in
3rd Mostly Sunny 79°F 49°F 0.00 in 0.0 in
4th Mostly Sunny 81°F 52°F 0.00 in 0.0 in
5th Rain Shower 78°F 56°F 0.00 in 0.0 in
6th Sunny 73°F 50°F 0.00 in 0.0 in
7th Overcast 67°F 56°F 0.00 in 0.0 in
8th Partly Cloudy 76°F 52°F 0.00 in 0.0 in
9th Mostly Cloudy 74°F 56°F 0.00 in 0.0 in
10th Partly Cloudy 69°F 45°F 0.00 in 0.0 in
11th Rain 58°F 43°F 0.38 in 0.0 in
12th Drizzle 69°F 58°F 0.03 in 0.0 in
13th Rain Shower 73°F 57°F 0.01 in 0.0 in
14th Partly Cloudy 73°F 54°F 0.00 in 0.0 in
15th Mostly Sunny 74°F 52°F 0.00 in 0.0 in
16th Mostly Cloudy 65°F 51°F 0.00 in 0.0 in
17th Mostly Cloudy 62°F 46°F 0.00 in 0.0 in
18th Partly Cloudy 71°F 49°F 0.00 in 0.0 in
19th Sunny 66°F 42°F 0.00 in 0.0 in
20th Sunny 68°F 36°F 0.00 in 0.0 in
21st Partly Cloudy 71°F 39°F 0.00 in 0.0 in
22nd Overcast 71°F 55°F 0.00 in 0.0 in
23rd Rain Shower 79°F 64°F 0.03 in 0.0 in
24th Rain Shower 72°F 53°F 0.01 in 0.0 in
25th Mostly Sunny 59°F 42°F 0.00 in 0.0 in
26th Rain Shower 54°F 35°F 0.03 in 0.0 in
27th Thunderstorm 64°F 50°F 1.07 in 0.0 in
28th Rain Shower 67°F 51°F 0.03 in 0.0 in
29th Rain Shower 60°F 48°F 0.15 in 0.0 in
30th Rain Shower 52°F 41°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

185.5

Normal: 66.0
Departure: + 119.5

Cooling Degree Days

10.0

Normal: 23.0
Departure: -13.0

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

9

Days with
Snowfall

0

Wind Summary

Monthly wind averages, peak gusts, and dominant direction

Average Wind Speed

0.9 mph

Peak Wind Gust

18 mph

Dominant Wind Direction

SSE

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

----

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.