Northern Indiana Weather Office, Indiana climate: Climate normals at a NOAA weather station
Northern Indiana Weather Office's normal year runs from 18°F January nights to 83°F July afternoons, with 39.8 inches of precipitation and 47 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 10.1°C, January lows of −8°C, July highs of 28°C, 1,011 mm of precipitation a year.
- NOAA stationNorthern Indiana Weather Office
- Station IDUSC00126400
- Location41.36°N 85.70°W
- Elevation951 ft (290 m)
On October 23, the normal high in Northern Indiana Weather Office is 60°F and the normal low 41°F, and the chance of measurable rain or snow is 39%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Northern Indiana Weather Office.
- Jan 31° 18°
- Feb 36° 20°
- Mar 47° 29°
- Apr 60° 39°
- May 71° 50°
- Jun 79° 60°
- Jul 83° 63°
- Aug 80° 62°
- Sep 74° 54°
- Oct 63° 44°
- Nov 48° 33°
- Dec 36° 23°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like at Northern Indiana Weather Office each month?
July is the warmest month, with normal highs of 83°F; January the coldest, with normal lows of 18°F. The most precipitation falls in August (4.19 in), the least in January (2.30 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 31°F | 18°F | 24.4°F | 2.30 | 14.6 | 14 | <1 | 29 | 9 h 30 min |
| February | 36°F | 20°F | 28.0°F | 2.31 | 14.9 | 13 | <1 | 26 | 10 h 40 min |
| March | 47°F | 29°F | 37.8°F | 2.76 | 5.1 | 12 | <1 | 21 | 11 h 50 min |
| April | 60°F | 39°F | 49.6°F | 4.13 | 0.9 | 14 | <1 | 7 | 13 h 20 min |
| May | 71°F | 50°F | 60.3°F | 4.08 | 0.0 | 14 | <1 | 1 | 14 h 30 min |
| June | 79°F | 60°F | 69.4°F | 4.16 | 0.0 | 13 | 2 | <1 | 15 h 10 min |
| July | 83°F | 63°F | 72.6°F | 3.84 | 0.0 | 10 | 4 | <1 | 14 h 50 min |
| August | 80°F | 62°F | 71.0°F | 4.19 | 0.0 | 10 | 1 | <1 | 13 h 50 min |
| September | 74°F | 54°F | 64.1°F | 3.27 | 0.0 | 11 | 1 | <1 | 12 h 30 min |
| October | 63°F | 44°F | 53.2°F | 3.08 | 0.0 | 13 | <1 | 3 | 11 h 10 min |
| November | 48°F | 33°F | 40.5°F | 3.11 | 3.7 | 11 | <1 | 15 | 9 h 50 min |
| December | 36°F | 23°F | 29.8°F | 2.57 | 8.1 | 14 | <1 | 26 | 9 h 10 min |
| Year (annual) | 59°F | 41°F | 50.1°F | 39.80 | 47.3 | 149 | 9 | 126 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 0°C | −8°C | −4.2°C | 58 mm | 37 cm |
| February | 2°C | −7°C | −2.2°C | 59 mm | 38 cm |
| March | 8°C | −2°C | 3.2°C | 70 mm | 13 cm |
| April | 15°C | 4°C | 9.8°C | 105 mm | 2 cm |
| May | 21°C | 10°C | 15.7°C | 104 mm | 0 cm |
| June | 26°C | 15°C | 20.8°C | 106 mm | 0 cm |
| July | 28°C | 17°C | 22.6°C | 98 mm | 0 cm |
| August | 27°C | 16°C | 21.7°C | 106 mm | 0 cm |
| September | 23°C | 12°C | 17.8°C | 83 mm | 0 cm |
| October | 17°C | 6°C | 11.8°C | 78 mm | 0 cm |
| November | 9°C | 1°C | 4.7°C | 79 mm | 9 cm |
| December | 2°C | −5°C | −1.2°C | 65 mm | 21 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00126400; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
Which months are mildest at Northern Indiana Weather Office?
Normal highs sit between 65°F and 85°F in May, June, July, August and September. Of those, August has the fewest days with rain (10).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00126400.
When is the last frost at Northern Indiana Weather Office?
In Northern Indiana Weather Office, the last spring frost (32°F) comes after April 24 in half of years and after May 10 in one year in ten; the first autumn frost comes before October 24 in half of years and before October 12 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- April 241 year in 10 after May 10; 9 in 10 after April 9
- First autumn frost, half of years before
- October 241 year in 10 before October 12; 9 in 10 before November 6
NOAA puts the median frost-free season at 182 days, and the season without a hard freeze (28°F) at 207 days.
A hard freeze (28°F) comes after April 12 in half of springs and before November 4 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Northern Indiana Weather Office in zone 6a in ZIP code 46555, the nearest ZIP area.
Frost dates for every NOAA station in Indiana · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00126400; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get at Northern Indiana Weather Office?
In a normal year in Northern Indiana Weather Office, 9 days a year reach 90°F (1 of them 100°F or more), 126 nights fall to 32°F or colder and 149 days bring measurable precipitation.
- Days at 90°F or more
- 9a normal year
- Days at 100°F or more
- 1a normal year
- Nights at 32°F or colder
- 126a normal year
- Days that stay below freezing
- 47high of 32°F or less
- Days with 0.01 inch of precipitation
- 149a normal year
- Days with 1 inch of snow or more
- 15a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00126400.
How sunny is it at Northern Indiana Weather Office?
Over a year 71% of the sunlight that would reach the ground under clear skies gets through the clouds at Northern Indiana Weather Office, 3.8 kWh per square metre a day. July is the sunniest month (81%) and December the cloudiest (55%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 55% | 1.5 |
| February | 60% | 2.4 |
| March | 65% | 3.5 |
| April | 69% | 4.7 |
| May | 71% | 5.4 |
| June | 77% | 6.1 |
| July | 81% | 6.2 |
| August | 80% | 5.4 |
| September | 78% | 4.4 |
| October | 69% | 2.9 |
| November | 63% | 1.9 |
| December | 55% | 1.3 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How many heating and cooling degree days does Northern Indiana Weather Office record?
A normal year at Northern Indiana Weather Office brings 6,154 heating degree days, 15% more than the median U.S. place (5,373), and 745 cooling degree days, 18% fewer than the median (908). Seven months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 3,027 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,257 | 0 |
| February | 1,037 | 0 |
| March | 844 | 2 |
| April | 469 | 6 |
| May | 196 | 48 |
| June | 27 | 158 |
| July | 6 | 243 |
| August | 12 | 198 |
| September | 103 | 78 |
| October | 377 | 11 |
| November | 735 | 0 |
| December | 1,091 | 0 |
| Year (annual) | 6,154 | 745 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00126400. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Have recent years at Northern Indiana Weather Office been warmer than normal?
2025 averaged 50.3°F, 0.2°F above the 1991-2020 normal of 50.1°F. 4 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 51.5°F | +1.4°F | 44.81 | 41.8 |
| 2022 | 49.9°F | −0.2°F | 39.01 | 41.8 |
| 2023 | 51.9°F | +1.8°F | 37.22 | 24.2 |
| 2024 | 53.1°F | +3.0°F | 40.54 | 23.6 |
| 2025 | 50.3°F | +0.2°F | 36.02 | 51.0 |
Source: observed years: ACIS, station USC00126400. A year counts only with all twelve months complete.
How does Northern Indiana Weather Office's climate compare?
Northern Indiana Weather Office is warmer than 18 of the 99 places with their own NOAA record in Indiana, and wetter than 15. Across the 7,247 U.S. stations with normals, its annual mean of 50.1°F is warmer than 40%.
In the Köppen classification computed from these normals, Northern Indiana Weather Office is Dfa: continental, no dry season, hot summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Northern Indiana Weather Office share this climate record?
12 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Ligonier, IN4,650 people · 9 mi NE
- Syracuse, IN3,236 people · 5 mi NW
- Albion, IN2,254 people · 15 mi E
- Barbee, IN1,298 people · 5 mi S
- North Webster, IN999 people · 2 mi S
- Enchanted Hills, IN867 people · 4 mi NE
- Cromwell, IN484 people · 5 mi NE
- Kimmell, IN459 people · 8 mi E
- Wolflake, IN337 people · 11 mi E
- Oswego, IN284 people · 5 mi SW
- Bear Lake, IN118 people · 10 mi E
- Wawaka, IN102 people · 13 mi NE
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Northern Indiana Weather Office's climate
What is the coldest month at Northern Indiana Weather Office?
January, with a normal high of 31°F and a normal low of 18°F. The warmest is July (83°F by day, 63°F at night).
Does it snow at Northern Indiana Weather Office?
Yes: 47 inches in a normal year, falling on 40 days with 0.1 inch or more, the most in February (14.9 inches).
What is the rainiest month at Northern Indiana Weather Office?
August, with 4.19 in of precipitation in a normal year; the driest is January with 2.30 in.
What plant hardiness zone is Northern Indiana Weather Office in?
The USDA's 2023 map puts Northern Indiana Weather Office in zone 6a in ZIP code 46555, the nearest ZIP area.
How late can frost come at Northern Indiana Weather Office?
In half of years the last 32°F night comes after April 24; in one year in ten it comes after May 10. Waiting until May 10 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Indiana climateThe statewide normals and every place in the state
- Warsaw, IN11 miles from this station, 50.0°F a year
- Goshen, IN12 miles from this station, 50.1°F a year
- Columbia City, IN19 miles from this station, 49.5°F a year
- Lagrange, IN25 miles from this station, 49.3°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made