ClimateAverages

Stamford Climate

Connecticut, United States of America · population 128,874 · 624 weather stations within 200 km · records 1750 to 2025

Average annual daytime high
15.7°C
Warmest month · July
28.5°C
Typical daytime high
Coldest month · January
-7.2°C
Typical overnight low

Stamford has an average annual daytime high of 15.7°C, based on the 1951 to 1980 baseline. Its warmest month is July, when highs typically reach 28.5°C, and its coldest is January, with overnight lows near -7.2°C.

Month by month averages

MonthAvg highAvg low
January2.2°C-7.2°CColdest
February3.5°C-6.6°C
March8.1°C-2.0°C
April15.2°C3.3°C
May21.2°C8.8°C
June25.9°C14.0°C
July28.5°C16.9°CWarmest
August27.6°C16.4°C
September23.6°C12.3°C
October17.6°C6.1°C
November11.0°C1.4°C
December4.3°C-4.6°C

Temperature range across the year

-9°1°11°21°31°JanFebMarAprMayJunJulAugSepOctNovDec
Daytime high Overnight low
Hottest year on record
2011
+2.4°C vs. 1951–1980
Coldest year on record
1783
-2.8°C vs. 1951–1980

These figures reflect annual averages, not single-day records. Daily observations are outside this dataset's precision.

Is Stamford getting hotter?

Since 1900, Stamford's average temperature has risen by +1.9°C. Compared to the earliest station records that begin in 1750, warming totals +2.5°C.

9.7°10.3°11.0°11.6°12.2°1951–1980 baseline190019251950197520002025

20-year smoothed annual temperature reconstructed from station anomalies. Dashed line: 1951–1980 baseline.

Best time to visit
April to October

Daytime highs sit within a comfortable 15°C to 26°C range.

FAQ

What is the average temperature in Stamford?

Stamford's average annual daytime high is 15.7°C, based on the 1951 to 1980 baseline period. The warmest month is July, with highs averaging 28.5°C, and the coldest is January, with lows averaging -7.2°C.

What is the warmest month in Stamford?

July is the warmest month in Stamford, with typical daytime highs of 28.5°C.

What is the hottest year on record for Stamford?

2011 is the hottest year on record for Stamford, running +2.4°C above the 1951 to 1980 baseline.

Is Stamford getting hotter?

Yes. Since 1900, Stamford has warmed by roughly +1.9°C.

When is the best time to visit Stamford?

April to October typically offers the most comfortable daytime highs, in the 15°C to 26°C range.

Nearby cities

Baseline period 1951 to 1980. Monthly averages are the mean of station observations weighted by proximity. Warming trend is the 20-year smoothed anomaly against that baseline.