Granger climate — normals and trends
Granger (United States) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 9.7 °C and it receives 992 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 (22.5 °C on average) and the coldest is January (-4.3 °C). Rainfall peaks in May.
Granger averages 121 frost days, 21 hot days (≥ 30 °C) and 130 rainy days per year.
Granger has warmed by +2.1 °C between 1940 and 2025, or +0.25 °C per decade. This trend is statistically significant.
The number of frost days there went from about 137 to 105 per year over the period.
The hottest day of the period reached 39.1 °C (on 6 July 2012) and the coldest -30.6 °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
GrangerIndiana
- coords
- 41.75°, -86.11°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.7°C
Average daily high
14.3°C
Average daily low
5.1°C
Annual rainfall
992mm
Sunshine / day
8.5h
Mean relative humidity
73%
Average peak wind
19.5km/h
Seasonal range
26.8°C
Frost days (< 0 °C)
121 d/yr
Hot days (≥ 30 °C)
21 d/yr
Rainy days (≥ 1 mm)
130 d/yr
Annual snowfall
86.2 cm
Average feels-like high
12.4 °C
Average feels-like low
2.2 °C
Average peak gust
38.7 km/h
Tropical nights (≥ 20 °C)
20 d/yr
Solar radiation
14.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.1 °C
since 1940
+0.3 °C per decade · r² = 0.41 · 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
39.1 °C
6 July 2012
Coldest day
-30.6 °C
19 January 1994
Wettest day
81 mm
1 June 1947
Windiest day
50.7 km/h
30 April 1984
Strongest gust
108.0 km/h
16 November 1960
Hottest feels-like
44.7 °C
14 July 1995
Coldest feels-like
-37.0 °C
19 January 1994
Snowiest day
26.1 cm
3 March 2023
Sunniest day
14.8 h
11 June 1943
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 | -1.3 °C | -0.5 °C | 44 mm | -19 mm |
| Feb | 1.1 °C | +0.2 °C | 30 mm | -25 mm |
| Mar | 12.6 °C | +5.5 °C | 104 mm | +23 mm |
| Apr | 15.6 °C | +1.2 °C | 97 mm | -3 mm |
| May | 19.4 °C | -1.1 °C | 124 mm | +20 mm |
| Jun | 27.7 °C | +2.0 °C | 126 mm | +24 mm |
| Jul | 28.9 °C | +1.4 °C | 195 mm | +100 mm |
| Aug | 26.2 °C | -0.4 °C | 72 mm | -17 mm |
| Sep | 25.0 °C | +2.0 °C | 39 mm | -39 mm |
| Oct | 19.0 °C | +2.5 °C | 62 mm | -17 mm |
| Nov | 8.7 °C | +0.2 °C | 63 mm | -14 mm |
| Dec | 1.5 °C | -0.4 °C | 71 mm | +2 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 Granger?
Granger has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 9.7 °C and it receives 992 mm of precipitation per year.
What is the hottest day ever recorded in Granger?
The hottest day measured in Granger between 1940 and 2025 was 6 July 2012, reaching 39.1 °C.
What is the coldest day in Granger?
The coldest day measured in Granger between 1940 and 2025 was 19 January 1994, at -30.6 °C.
Does it snow in Granger?
Yes. Granger gets on average 86.2 cm of snow per year and has around 121 frost days.
Has the climate of Granger warmed?
Yes: Granger warmed by +2.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Granger?
The wettest day measured in Granger between 1940 and 2025 was 1 June 1947, with 81 mm of rain in 24 hours.
What was the windiest day in Granger?
The windiest day measured in Granger between 1940 and 2025 was 30 April 1984, with winds reaching 50.7 km/h.
What is the warmest month in Granger?
The warmest month in Granger is July (22.5 °C on average); the coldest is January (-4.3 °C).
How much does it rain in Granger?
Granger receives on average 992 mm of precipitation per year, spread over about 130 rainy days.
Is it sunny in Granger?
Granger gets on average 8.5 hours of sunshine per day, roughly 3,103 hours per year over 1940-2025.
What is the biggest single-day snowfall in Granger?
The heaviest 24-hour snowfall measured in Granger between 1940 and 2025 was 3 March 2023, with 26.1 cm.
Are there tropical nights in Granger?
Yes: Granger has on average 20 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Granger?
In Granger, between 1940 and 2025, the highest apparent temperature reached 44.7 °C on 14 July 1995, and the lowest was -37.0 °C on 19 January 1994.
Compare Granger with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Granger