PlainClimate
NOAA 1991–2020 normals 50°F annual avg Public-domain federal data

Indiana Dunes NL, IN Climate

Explore average temperature, rainfall, and comfort score sourced from NOAA NCEI's 1991–2020 climate normals →

50°F
Avg annual temp
63/100
Comfort score
39.2"
Annual precip
188d
Growing season

30-year climate normals from 1 weather station (1991-2020).

The climate verdict for Indiana Dunes NL

Indiana Dunes NL, Indiana averages 50°F a year and scores 63/100 on the comfort index - good, milder than 47% of U.S. cities.

50°F
annual average temperature (NOAA normal)
63/100
comfort score, milder than 47% of U.S. cities
39.2"
annual precipitation · 40" snow
188 days
frost-free growing season

Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.

Avg Temperature

50°F (10°C)

Avg High

58°F

Avg Low

42°F

Annual Precip

39.2"

Annual Snow

40.3"

Comfort Score

63/100

Good

Climate Comfort Score

63/100

Good

Avg Annual Temperature

50°F

30-year mean (NOAA NCEI)

Annual Precipitation

39.2"

Plus 40.3" of snow

Comfort score vs national 100-point ceiling (Indiana Dunes NL) 63.0%
National median (63)

PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Good for the Indiana Dunes NL area.

How Indiana Dunes NL compares to every U.S. city

Indiana Dunes NL's comfort score vs. all U.S. cities

PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals

63 Top 53% higher than 47% of 6,915 US cities

0–10: 0 US cities (0%). Below this entry. 10–20: 0 US cities (0%). Below this entry. 20–30: 58 US cities (1%). Below this entry. 30–40: 439 US cities (6%). Below this entry. 40–50: 1,302 US cities (19%). Below this entry. 50–60: 1,433 US cities (21%). Below this entry. 60–70: 1,357 US cities (20%). This entry sits in this band. 70–80: 1,102 US cities (16%). Above this entry. 80–90: 778 US cities (11%). Above this entry. 90–100: 420 US cities (6%). Above this entry. This city 0 100 every U.S. city, bucketed by value

Each bar is a band; taller bars hold more US cities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020

Warming context for Indiana Dunes NL

Methodology

Since 1900, U.S. land temperatures have tracked (and diverged from) the global mean - the chart below shows how. Indiana Dunes NL's current NOAA 1991-2020 normal sits within that longer spread, and the most recent decade runs warmer than the 30-year mean.

Warming context, U.S. vs global, with Paris reference lines Anomaly chart from 1900 to 2024. Local series shows warming of 0.11 °C per decade versus a global rate of 0.11 °C per decade (ratio 1.00). Paris Agreement thresholds at 1.5 and 2.0 °C are dashed. -1.0°C -0.5°C +0.0°C +0.5°C +1.0°C +1.5°C +2.0°C +2.5°C Paris 1.5°C Paris 2.0°C 1900192019401960198020002020
  • United States land mean (NOAA NCEI) +0.11 °C/decade
  • Global anomaly (NASA GISTEMP) +0.11 °C/decade
  • Paris Agreement thresholds 1.5°C / 2.0°C
Sources: NOAA NCEI, NASA GISTEMP. Paris thresholds per IPCC AR6 WG1.

Monthly Temperatures

Average daily high and low temperatures by month

Month Avg High Avg Low Mean
January 32°F (0°C) 18°F (-8°C) 25°F (-4°C)
February 36°F (2°C) 21°F (-6°C) 28°F (-2°C)
March 46°F (8°C) 30°F (-1°C) 38°F (3°C)
April 57°F (14°C) 40°F (4°C) 48°F (9°C)
May 68°F (20°C) 50°F (10°C) 59°F (15°C)
June 78°F (25°C) 60°F (15°C) 69°F (20°C)
July 82°F (28°C) 64°F (18°C) 73°F (23°C)
August 80°F (27°C) 63°F (17°C) 72°F (22°C)
September 74°F (24°C) 56°F (13°C) 65°F (19°C)
October 62°F (17°C) 45°F (7°C) 54°F (12°C)
November 49°F (9°C) 34°F (1°C) 42°F (5°C)
December 37°F (3°C) 24°F (-4°C) 31°F (-1°C)

Monthly Precipitation

Average monthly rainfall and snowfall

January 2.2"

Snow: 16.0"

12.6 days with precipitation

February 2.0"

Snow: 9.7"

9.0 days with precipitation

March 2.3"

Snow: 6.0"

10.9 days with precipitation

April 3.5"

Snow: 0.6"

11.3 days with precipitation

May 4.3"

12.3 days with precipitation

June 4.3"

11.7 days with precipitation

July 4.0"

9.7 days with precipitation

August 4.1"

9.9 days with precipitation

September 3.6"

9.6 days with precipitation

October 3.8"

11.5 days with precipitation

November 2.8"

Snow: 0.7"

10.6 days with precipitation

December 2.3"

Snow: 7.3"

11.9 days with precipitation

Frost Dates & Growing Season

First Fall Freeze

October 27

50% probability date

Last Spring Freeze

April 22

50% probability date

Growing Season

188 days

Heating & Cooling Degree Days

Annual totals indicate energy demand for heating and cooling

Heating Degree Days

6,171

Higher = more heating needed

Cooling Degree Days

808

Higher = more cooling needed

Warmest Month

July

Coldest Month

January

What Indiana Dunes NL's climate means for you

Indiana Dunes NL runs 50°F a year - peaking in July, coldest in January.

  • Gardeners get about 188 frost-free days, with the last spring freeze near April 22 - plan the planting calendar around it, not the regional average.
  • Energy bills track 6,171 heating and 808 cooling degree days a year, higher means the furnace or AC runs more.
  • Comparing places to live? Line this city up against nearby cities and the national rankings. See rankings

These are 30-year NOAA normals (1991–2020) - the typical year, not a forecast for any specific season.

Climate Guides

Climate Insight: Indiana Dunes NL, IN

In Indiana Dunes NL, Indiana, the NOAA 1991–2020 climate normals put the annual average temperature at 50°F, ranging from a mean daily high of 58°F to a mean daily low of 42°F. July is typically the warmest month of the year, while January is the coldest. As thirty-year averages computed from station USC00124244, these numbers smooth out year-to-year noise into a working baseline for a typical month.

Anyone planning to live, garden, or travel in Indiana Dunes NL should weigh precipitation alongside temperature: the annual average runs 39.2 inches, with 40.3 inches typically falling as snow. The frost-free season averages 188 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near April 22 and the first fall freeze near October 27. And on the energy front, 6,171 heating degree days and 808 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.

On PlainClimate's composite comfort index, Indiana Dunes NL scores 63/100 (Good), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. The monthly tables above turn that into a planning tool: expect the mildest highs and lows in the shoulder seasons, July-driven heat at the peak of summer, and January-driven cold at the depth of winter. Every number here is a thirty-year average, not a forecast, so any given year can and does run warmer, cooler, wetter, or drier than the normal.

Frequently Asked Questions

What is the average temperature in Indiana Dunes NL, IN?
The average annual temperature in Indiana Dunes NL, Indiana is 50°F. The warmest month averages 82°F (28°C) and the coldest averages 18°F (-8°C).
How much rain does Indiana Dunes NL get?
Indiana Dunes NL receives 39.2 inches of precipitation annually, including 40.3 inches of snow. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Indiana Dunes NL?
Indiana Dunes NL has a climate comfort score of 63/100 (Good), milder than 47% of U.S. cities in the PlainClimate database.
When is the growing season in Indiana Dunes NL?
Indiana Dunes NL has approximately 188 frost-free days per year, with the last spring freeze around April 22 and the first fall freeze around October 27.
How much energy does heating and cooling require in Indiana Dunes NL?
Indiana Dunes NL has 6,171 heating degree days and 808 cooling degree days annually, a heating-dominated climate. See our <a href="/guides/reading-weather-data/" class="underline hover:text-brand-600">guide to reading weather data</a> for what these figures mean.
Where does this Indiana Dunes NL climate data come from?
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00124244 near Indiana Dunes NL.

Data Sources

Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00124244. For informational purposes only.

Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainClimate Editorial

Every figure on PlainClimate is rendered directly from NOAA 1991-2020 U.S. Climate Normals data, no number is typed in by an editor. This page draws directly on NOAA 1991-2020 U.S. Climate Normals data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.