Monthly Climate Summary

September 2018 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

66.3°F

Normal: 63.6°F
Departure: + 2.7°F

Total Precipitation

5.65 in

Normal: 3.73 in
Departure: + 1.92 in

Total Snowfall

0.0 in

Normal: 0.0 in
Departure: + 0.0 in

Warmest Day

92°F

September 3rd

Coldest Day

43°F

September 30th

Wettest Day

2.21 in

September 18th

Snowiest Day

0.0 in

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September 2018 Daily Summary
Day Weather High Temperature Low Temperature Precipitation Snowfall
1st Mostly Cloudy 77°F 65°F 0.00 in 0.0 in
2nd Partly Cloudy 81°F 65°F 0.00 in 0.0 in
3rd Mostly Cloudy 92°F 72°F 0.00 in 0.0 in
4th Partly Cloudy 87°F 69°F 0.00 in 0.0 in
5th Mostly Sunny 91°F 65°F 0.00 in 0.0 in
6th Mostly Cloudy 90°F 71°F 0.00 in 0.0 in
7th Mostly Cloudy 76°F 61°F 0.00 in 0.0 in
8th Overcast 64°F 52°F 0.00 in 0.0 in
9th Overcast 62°F 48°F 0.00 in 0.0 in
10th Rain 59°F 51°F 1.00 in 0.0 in
11th Rain 68°F 57°F 0.15 in 0.0 in
12th Rain 73°F 65°F 0.03 in 0.0 in
13th Rain Shower 79°F 68°F 0.01 in 0.0 in
14th Mostly Cloudy 77°F 66°F 0.00 in 0.0 in
15th Mostly Cloudy 82°F 66°F 0.00 in 0.0 in
16th Sunny 87°F 63°F 0.00 in 0.0 in
17th Rain Shower 80°F 67°F 0.09 in 0.0 in
18th Rain 79°F 68°F 2.21 in 0.0 in
19th Mostly Cloudy 74°F 61°F 0.00 in 0.0 in
20th Mostly Cloudy 71°F 57°F 0.00 in 0.0 in
21st Rain Shower 70°F 64°F 0.01 in 0.0 in
22nd Rain Shower 69°F 52°F 0.01 in 0.0 in
23rd Mostly Sunny 65°F 44°F 0.00 in 0.0 in
24th Partly Cloudy 64°F 46°F 0.00 in 0.0 in
25th Rain 61°F 51°F 1.15 in 0.0 in
26th Rain Shower 75°F 60°F 0.31 in 0.0 in
27th Rain Shower 66°F 51°F 0.06 in 0.0 in
28th Rain 61°F 52°F 0.62 in 0.0 in
29th Mostly Sunny 66°F 48°F 0.00 in 0.0 in
30th Mostly Cloudy 64°F 43°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

99.0

Normal: 66.0
Departure: + 33.0

Cooling Degree Days

138.0

Normal: 23.0
Departure: + 115.0

Climate Activity Summary

Key temperature and precipitation patterns for the month

Days at or
Above 90°F

3

Days Above Freezing

30

Days That Stayed Below Freezing

0

Freezing Nights (Low Below 32°F)

0

Days with Precipitation

12

Days with
Snowfall

0

Wind Summary

Monthly wind averages, peak gusts, and dominant direction

Average Wind Speed

0.5 mph

Peak Wind Gust

27 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.