La Porte climate — normals and trends
La Porte (United States) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 10.0 °C and it receives 1,000 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 (23.0 °C on average) and the coldest is January (-4.3 °C). Rainfall peaks in June.
La Porte averages 115 frost days, 26 hot days (≥ 30 °C) and 128 rainy days per year.
La Porte has warmed by +2.2 °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 131 to 99 per year over the period.
The hottest day of the period reached 39.7 °C (on 25 June 1988) and the coldest -30.4 °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
La PorteIndiana
- coords
- 41.61°, -86.71°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.0°C
Average daily high
14.7°C
Average daily low
5.5°C
Annual rainfall
1,000mm
Sunshine / day
8.8h
Mean relative humidity
72%
Average peak wind
19.2km/h
Seasonal range
27.3°C
Frost days (< 0 °C)
115 d/yr
Hot days (≥ 30 °C)
26 d/yr
Rainy days (≥ 1 mm)
128 d/yr
Annual snowfall
78.2 cm
Average feels-like high
12.8 °C
Average feels-like low
2.7 °C
Average peak gust
38.9 km/h
Tropical nights (≥ 20 °C)
25 d/yr
Solar radiation
14.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.2 °C
since 1940
+0.3 °C per decade · r² = 0.42 · 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
39.7 °C
25 June 1988
Coldest day
-30.4 °C
19 January 1994
Wettest day
74 mm
25 June 2021
Windiest day
51.0 km/h
6 April 1988
Strongest gust
109.4 km/h
15 November 1960
Hottest feels-like
45.4 °C
14 July 1995
Coldest feels-like
-36.3 °C
19 January 1994
Snowiest day
26.0 cm
26 January 1967
Sunniest day
14.7 h
11 June 2024
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 | -0.3 °C | 36 mm | -25 mm |
| Feb | 1.7 °C | +0.4 °C | 31 mm | -24 mm |
| Mar | 12.8 °C | +5.3 °C | 92 mm | +10 mm |
| Apr | 15.8 °C | +1.2 °C | 86 mm | -17 mm |
| May | 19.7 °C | -1.0 °C | 120 mm | +15 mm |
| Jun | 28.1 °C | +2.0 °C | 146 mm | +40 mm |
| Jul | 29.2 °C | +1.3 °C | 224 mm | +126 mm |
| Aug | 26.3 °C | -0.8 °C | 87 mm | -1 mm |
| Sep | 25.4 °C | +1.8 °C | 30 mm | -50 mm |
| Oct | 19.5 °C | +2.4 °C | 71 mm | -7 mm |
| Nov | 9.2 °C | +0.3 °C | 64 mm | -12 mm |
| Dec | 1.3 °C | -0.8 °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 La Porte?
La Porte has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 10.0 °C and it receives 1,000 mm of precipitation per year.
What is the hottest day ever recorded in La Porte?
The hottest day measured in La Porte between 1940 and 2025 was 25 June 1988, reaching 39.7 °C.
What is the coldest day in La Porte?
The coldest day measured in La Porte between 1940 and 2025 was 19 January 1994, at -30.4 °C.
Does it snow in La Porte?
Yes. La Porte gets on average 78.2 cm of snow per year and has around 115 frost days.
Has the climate of La Porte warmed?
Yes: La Porte warmed by +2.2 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in La Porte?
The wettest day measured in La Porte between 1940 and 2025 was 25 June 2021, with 74 mm of rain in 24 hours.
What was the windiest day in La Porte?
The windiest day measured in La Porte between 1940 and 2025 was 6 April 1988, with winds reaching 51.0 km/h.
What is the warmest month in La Porte?
The warmest month in La Porte is July (23.0 °C on average); the coldest is January (-4.3 °C).
How much does it rain in La Porte?
La Porte receives on average 1,000 mm of precipitation per year, spread over about 128 rainy days.
Is it sunny in La Porte?
La Porte gets on average 8.8 hours of sunshine per day, roughly 3,212 hours per year over 1940-2025.
What is the biggest single-day snowfall in La Porte?
The heaviest 24-hour snowfall measured in La Porte between 1940 and 2025 was 26 January 1967, with 26.0 cm.
Are there tropical nights in La Porte?
Yes: La Porte has on average 25 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in La Porte?
In La Porte, between 1940 and 2025, the highest apparent temperature reached 45.4 °C on 14 July 1995, and the lowest was -36.3 °C on 19 January 1994.
Compare La Porte with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around La Porte