ClimateAverages

Gary Climate

Indiana, United States of America · population 77,156 · 383 weather stations within 200 km · records 1777 to 2025

Average annual daytime high
14.8°C
Warmest month · July
28.3°C
Typical daytime high
Coldest month · January
-8.9°C
Typical overnight low

Gary has an average annual daytime high of 14.8°C, based on the 1951 to 1980 baseline. Its warmest month is July, when highs typically reach 28.3°C, and its coldest is January, with overnight lows near -8.9°C.

Month by month averages

MonthAvg highAvg low
January-0.7°C-8.9°CColdest
February1.5°C-6.9°C
March6.5°C-1.9°C
April14.1°C4.1°C
May20.8°C9.9°C
June26.3°C15.4°C
July28.3°C18.0°CWarmest
August27.5°C17.5°C
September24.1°C13.5°C
October17.4°C7.2°C
November9.1°C0.9°C
December2.3°C-5.2°C

Temperature range across the year

-11°-1°10°20°30°JanFebMarAprMayJunJulAugSepOctNovDec
Daytime high Overnight low
Hottest year on record
2011
+2.7°C vs. 1951–1980
Coldest year on record
1836
-2.5°C vs. 1951–1980

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

Is Gary getting hotter?

Since 1900, Gary's average temperature has risen by +2.2°C. Compared to the earliest station records that begin in 1777, warming totals +2.3°C.

9.1°9.8°10.5°11.2°11.8°1951–1980 baseline190019251950197520002025

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

Best time to visit
May to October

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

FAQ

What is the average temperature in Gary?

Gary's average annual daytime high is 14.8°C, based on the 1951 to 1980 baseline period. The warmest month is July, with highs averaging 28.3°C, and the coldest is January, with lows averaging -8.9°C.

What is the warmest month in Gary?

July is the warmest month in Gary, with typical daytime highs of 28.3°C.

What is the hottest year on record for Gary?

2011 is the hottest year on record for Gary, running +2.7°C above the 1951 to 1980 baseline.

Is Gary getting hotter?

Yes. Since 1900, Gary has warmed by roughly +2.2°C.

When is the best time to visit Gary?

May 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.