LA PORTE, IN

Overview:
Located just 12 miles southwest of Lake Michigan, La Porte, IN is home to abundant recreation just outside the Chicagoland area. Warm summers typical of the Upper Midwest are common, while winters are moderated by the lake. Extreme minimum temperatures rarely reach -20°F in the winter as a result. Lake effects influence precipitation amounts strongly in the winter with favorable location and wind direction in respect to Lake Michigan.

Annual snowfall totals average over 60 inches per year, nearly double the amount at similar latitude stations in northern Illinois. The increase in liquid-equivalent winter precipitation leads to annual precipitation amounts around 3 inches higher than areas not affected by the lake.

State/ Province ID: IN

Station ID: C00124837

Directory Name: LAPORTE_HCN_IN_C00124837

Elevation: 257.60m

The resources presented here were developed in cooperation with the Office of the Michigan State Climatologist using data from the National Centers for Environmental Information. For more information regarding our data sources, quality control, and methodology, please see our Historical Climatologies: Quality Control reference guide.

Jump

Temperatures
Precipitation
Back to Top
Back to Station Map

Recent Climate Summary, 1991-2020


Average Temperature	50.4°F10.2°C
Average Low Temperature	42.1°F5.6°C
Average High Temperature	58.7°14.8°C
Days/Year that exceed 90°F	7.3
Days/Year that fall below 32°F	111.3
Lowest Annual Average Temperature	46.6°F8.1°C
Highest Annual Average Temperature	53.6°F12.0°C
Average Annual Total Precipitation	42.7 in108.6 cm
Lowest Annual Precipitation Total	32.3 in82.1 cm
Highest Annual Precipitation Total	56.7 in143.9 cm
Days/Year that exceed 1.25" of Precipitation	4.8

Temperature

Click on the following links to be taken to the corresponding portion of the page.

Monthly Average Temperature
How Temperatures are Changing
- Changes in Average Temperature – Includes a summary table of the average annual and seasonal temperature changes, and time series graphs of how the annual low, average, and high temperatures compare to the long term average plotted for every year on record.
- Cold Temperatures – View time series plots of the number of days per year below 32°F and the number of heating degree days per year to see how cold days are changing.
- Hot Temperatures – View time series plots of the number of days per year above 90°F and the number of cooling degree days per year to see how hot days are changing.
- Growing Season Changes – View a time series of the annual number of days in the freeze-free period.

Monthly Average Temperature

Changes in Average Temperature, 1951-2025.


	°F°C
Annual average temperature	1.30.7
Winter average temperature	2.21.2
Spring average temperature	1.50.8
Summer average temperature	0.60.3
Fall average temperature	0.80.4

Annual High and Low Temperature Departure

Cold Temperatures

¹Heating Degree Days (HDDs) are indexed units, not actual days, that roughly describe the demand to heat a building. HDDs accumulate on days colder than 65°F when heating is required. Every degree below 65°F is added to the annual total for an annual HDD value, which is plotted in the figure.

Hot Temperatures

²Cooling Degree Days (CDDs) are indexed units, not actual days, that roughly describe the demand to cool a building. CDDs accumulate on days warmer than 65°F when cooling is required. Every degree above 65°F is added to the annual total for an annual CDD value, which is plotted in the figure.

Growing Season Changes

Precipitation