Gary climate — normals and trends
Gary (United States) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 10.1 °C and it receives 977 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (23.2 °C on average) and the coldest is January (-4.3 °C). Rainfall peaks in May.
Gary averages 111 frost days, 21 hot days (≥ 30 °C) and 125 rainy days per year.
Gary has warmed by +2.0 °C between 1940 and 2025, or +0.23 °C per decade. This trend is statistically significant.
The number of frost days there went from about 127 to 95 per year over the period.
The hottest day of the period reached 38.7 °C (on 14 July 1995) and the coldest -29.6 °C (on 19 January 1994).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
GaryIndiana
- coords
- 41.59°, -87.35°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.1°C
Average daily high
14.2°C
Average daily low
6.1°C
Annual rainfall
977mm
Sunshine / day
8.9h
Mean relative humidity
72%
Average peak wind
21.5km/h
Seasonal range
27.5°C
Frost days (< 0 °C)
111 d/yr
Hot days (≥ 30 °C)
21 d/yr
Rainy days (≥ 1 mm)
125 d/yr
Annual snowfall
74.0 cm
Average feels-like high
12.2 °C
Average feels-like low
3.0 °C
Average peak gust
40.5 km/h
Tropical nights (≥ 20 °C)
32 d/yr
Solar radiation
15.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.0 °C
since 1940
+0.2 °C per decade · r² = 0.37 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
38.7 °C
14 July 1995
Coldest day
-29.6 °C
19 January 1994
Wettest day
79 mm
25 June 2021
Windiest day
56.5 km/h
6 April 1988
Strongest gust
108.4 km/h
10 November 1998
Hottest feels-like
45.6 °C
14 July 1995
Coldest feels-like
-37.4 °C
20 January 1985
Snowiest day
25.5 cm
26 January 1967
Sunniest day
14.7 h
15 June 2020
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | -1.0 °C | -0.1 °C | 36 mm | -24 mm |
| Feb | 1.6 °C | +0.7 °C | 25 mm | -29 mm |
| Mar | 12.0 °C | +5.4 °C | 93 mm | +11 mm |
| Apr | 14.6 °C | +1.2 °C | 94 mm | -9 mm |
| May | 18.0 °C | -1.8 °C | 108 mm | +5 mm |
| Jun | 26.8 °C | +1.4 °C | 145 mm | +45 mm |
| Jul | 28.5 °C | +1.0 °C | 182 mm | +90 mm |
| Aug | 26.1 °C | -0.6 °C | 89 mm | +5 mm |
| Sep | 24.9 °C | +1.7 °C | 39 mm | -41 mm |
| Oct | 18.9 °C | +2.1 °C | 103 mm | +24 mm |
| Nov | 9.3 °C | +0.6 °C | 65 mm | -11 mm |
| Dec | 1.5 °C | -0.6 °C | 67 mm | +0 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Gary?
Gary has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 10.1 °C and it receives 977 mm of precipitation per year.
What is the hottest day ever recorded in Gary?
The hottest day measured in Gary between 1940 and 2025 was 14 July 1995, reaching 38.7 °C.
What is the coldest day in Gary?
The coldest day measured in Gary between 1940 and 2025 was 19 January 1994, at -29.6 °C.
Does it snow in Gary?
Yes. Gary gets on average 74.0 cm of snow per year and has around 111 frost days.
Has the climate of Gary warmed?
Yes: Gary warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Gary?
The wettest day measured in Gary between 1940 and 2025 was 25 June 2021, with 79 mm of rain in 24 hours.
What was the windiest day in Gary?
The windiest day measured in Gary between 1940 and 2025 was 6 April 1988, with winds reaching 56.5 km/h.
What is the warmest month in Gary?
The warmest month in Gary is July (23.2 °C on average); the coldest is January (-4.3 °C).
How much does it rain in Gary?
Gary receives on average 977 mm of precipitation per year, spread over about 125 rainy days.
Is it sunny in Gary?
Gary gets on average 8.9 hours of sunshine per day, roughly 3,249 hours per year over 1940-2025.
What is the biggest single-day snowfall in Gary?
The heaviest 24-hour snowfall measured in Gary between 1940 and 2025 was 26 January 1967, with 25.5 cm.
Are there tropical nights in Gary?
Yes: Gary has on average 32 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Gary?
In Gary, between 1940 and 2025, the highest apparent temperature reached 45.6 °C on 14 July 1995, and the lowest was -37.4 °C on 20 January 1985.
Compare Gary with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Gary