Indianapolis Nwfo, IN Climate: Temperature & Rain by Month
Explore NOAA NCEI's 1991–2020 climate normals → and a clearly labeled PlainClimate comfort calculation
30-year climate normals (1991-2020) from Indianapolis Nwfo's primary NOAA station, INDIANAPOLIS NWFO.
The climate verdict for Indianapolis Nwfo
Water is the standout signal in Indianapolis Nwfo, Indiana: 45.8 inches of precipitation in a normal year. Against that wet profile, NOAA records an annual average of 53°F. Its climate comfort score of 68/100 (good) lands mid-pack nationally, exceeding 56% of station-mapped location scores.
- 53°F
- yearly average temperature, NOAA normal
- 68/100
- comfort score, above 56% of station-mapped location scores
- 45.8"
- yearly precipitation total
- 198 days
- frost-free growing season
Indianapolis Nwfo: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00124260 · Indianapolis Nwfo, IN 53°F mean · 45.8" precip
TEMP-COOL · RANK-MID · PHOTO-FINISH · PRCP-MID · SWING-WIDE · COMF-MID · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 53°F
- RANK-MID #3,705
- PHOTO-FINISH ≈ Perry
- PRCP-MID 45.8"
- SWING-WIDE 48°F
- COMF-MID 68/100
- LOAD-HEAT 5,382 HDD
- STN-1 USC00124260
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Perry, IL (+ 0 °F mean)
Instrument codes from this station's NOAA 1991–2020 normals, mean temperature, corpus warmth rank, photo-finish peer station, precipitation band, seasonal swing, comfort composite, degree-day load, and field book, not a livability rating.
Mean-temperature neighbourhood
Nationwide NOAA normal poles and nearest peers, not a reprint of every IN station list.
- Indianapolis Nw… (this station) 53°F
- Cold Decatur, IL 53°F
- Hot Jerseyville, IL 53°F
- Near Perry, IL 53°F
- Near Vandalia, MO 53°F
Climate Living Index · Indianapolis Nwfo
Indianapolis Nwfo: 61/100 · grade C
Indianapolis Nwfo publishes 4 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 2 missing weights rescale to 100.
PlainClimate-derived for Indianapolis Nwfo, not an official NOAA rating. Rankings still use Comfort Score 68/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Normal heat + freeze calendar | 115 calendar days | 67/100 · C |
| Frost-free season | 198 days/year | 63/100 · C |
| Precipitation balance | 45.8 in · 10.8 from 35 in | 62/100 · C |
| Annual temperature balance | 53.3°F · 14.2° from 67.5°F | 54/100 · D |
Indianapolis Nwfo · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Indianapolis Nwfo is a continental Köppen climate: Dfa
Coldest-month mean 27.6°F and warmest-month mean 76.0°F place this station in continental, no dry season, hot summer climates (Dfa). Class Dfa is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: continental, specifically continental, no dry season, hot summer.
- Köppen code
- Dfa
- Group
- Continental
- Warmest month
- 76.0°F
- Coldest month
- 27.6°F
Source: official public datasets monthly normals (1991–2020) at the city’s primary station. This is a station classification, not a mapped regional consensus.
National standing · heating-led station
Where Indianapolis Nwfo sits across the climate record
Three NOAA fields for Indianapolis Nwfo's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- 54th percentile warmth
- Mid-pack annual mean versus 6,861 station normals.
- Annual precipitation
- Top 30% wettest
- Indianapolis Nwfo's annual total ranks in the wetter third of 6,352 measured normals.
- Seasonal temperature swing
- Wider than 75%
- Warmest-to-coldest month gap for Indianapolis Nwfo is large versus 6,861 complete station-years.
How Indianapolis Nwfo compares across U.S. station-mapped locations
Indianapolis Nwfo's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
68 Top 44% score exceeds 56% of 6,189 station-mapped location scores
- 0–10: 0 station-mapped locations (0%). Below this entry.
- 10–20: 0 station-mapped locations (0%). Below this entry.
- 20–30: 96 station-mapped locations (2%). Below this entry.
- 30–40: 280 station-mapped locations (5%). Below this entry.
- 40–50: 1,113 station-mapped locations (18%). Below this entry.
- 50–60: 1,329 station-mapped locations (21%). Below this entry.
- 60–70: 1,236 station-mapped locations (20%). This entry sits in this band.
- 70–80: 650 station-mapped locations (11%). Above this entry.
- 80–90: 921 station-mapped locations (15%). Above this entry.
- 90–100: 564 station-mapped locations (9%). Above this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 36°F (2°C) | 19°F (-7°C) | 28°F (-2°C) | 3.2" | 26.2 | 0.0 |
| February | 40°F (5°C) | 23°F (-5°C) | 32°F (0°C) | 2.5" | 22.6 | 0.0 |
| March | 51°F (11°C) | 32°F (0°C) | 42°F (5°C) | 3.7" | 16.6 | 0.0 |
| April | 64°F (18°C) | 43°F (6°C) | 54°F (12°C) | 4.6" | 4.8 | 0.0 |
| May | 74°F (23°C) | 54°F (12°C) | 64°F (18°C) | 4.9" | 0.1 | 0.8 |
| June | 82°F (28°C) | 63°F (17°C) | 73°F (23°C) | 5.4" | 0.0 | 5.1 |
| July | 85°F (30°C) | 67°F (19°C) | 76°F (24°C) | 4.7" | 0.0 | 9.5 |
| August | 84°F (29°C) | 65°F (18°C) | 75°F (24°C) | 3.5" | 0.0 | 4.9 |
| September | 78°F (26°C) | 57°F (14°C) | 68°F (20°C) | 3.5" | 0.0 | 4.0 |
| October | 66°F (19°C) | 45°F (7°C) | 55°F (13°C) | 3.4" | 1.5 | 0.2 |
| November | 52°F (11°C) | 34°F (1°C) | 43°F (6°C) | 3.5" | 14.1 | 0.0 |
| December | 40°F (4°C) | 25°F (-4°C) | 32°F (0°C) | 3.0" | 22.4 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 86°F around July 11, short of 90°F on every date, while 115 dates carry a normal low at or below freezing, the coldest 19°F near January 16.
The freezing stretch
The normal low stays at or below 32°F into March 16, then returns to freezing around November 23, covering 115 dates in all.
Derived from the normal daily minimum. This is a different measure from the 50%-probability frost dates shown elsewhere on this page, which come from NOAA’s frost product.
The widest day
October 8 carries the biggest normal gap between afternoon and dawn, 22°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Indianapolis Nwfo.
Where Indianapolis Nwfo Stands Nationally
Days and nights track unusually close together; the widest normal swing, about 22°F, is narrower than most stations record.
Indianapolis Nwfo earns one nationally notable standing (outer quintile) against 6,860 NOAA 1991–2020 normals stations, middle-of-the-pack metrics stay silent here.
Monthly Precipitation
Average monthly rainfall
Indianapolis Nwfo spreads its precipitation across the year
Neither half of the year dominates here: June through August take 29% of the annual total and December through February 19%, with neither reaching the 35% that would mark a distinct wet season. Indianapolis Nwfo has no dry season to plan around, though it does carry a wide 48.4°F gap between its warmest and coldest month.
The gap between the wettest and driest month still matters: June averages 5.4" and February 2.5". The three wettest months together take 33% of the year, against the 25% a perfectly flat distribution would give them.
Shares are computed from this station's own 1991-2020 monthly precipitation normals. "Spread across the year" means neither the June-August nor the December-February share reaches 35%; it describes an average year, not the variability of any single one.
Frost Dates & Growing Season
First Fall Freeze
October 27
50% probability date
Last Spring Freeze
April 12
50% probability date
Growing Season
198 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
5,382
Higher = more heating needed
Cooling Degree Days
1,147
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside IN closest to Indianapolis Nwfo on two NOAA annual-normal axes (mean temperature and annual precipitation). Chip rows use distinct link sets.
Closest by average temperature
Nearest out-of-state peers by annual mean temperature (53°F here).
- Bowling Green, MO 53°F · 0.0°F off
- Corona, NM 53°F · 0.0°F off
- Holly, CO 53°F · 0.0°F off
- Lancaster, PA 53°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (45.8" here), excluding temperature-peer places.
- Joplin, MO 45.8" · 0.0" off
- Billings, MO 45.8" · 0.0" off
- Lebanon, MO 45.9" · 0.0" off
- Williamstown, KY 45.9" · 0.0" off
Data-derived climate profile
How Indianapolis Nwfo's climate pattern fits together
heating led · wet · mid swing
Indianapolis Nwfo's energy balance leans toward cold weather: 5,382 annual heating degree days against 1,147 for cooling. Its 48.4°F seasonal range still makes the monthly rows more useful than the annual average alone.
Indianapolis Nwfo's frost-free season lasts about 198 days, a middle-length window whose endpoints matter more than the annual average. It describes freeze probability, not year-specific planting conditions.
July and January mark the typical warm and cold ends of the calendar in Indianapolis Nwfo's middle-range seasonal profile. The measured spread is 48.4°F. The annual average is 53°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Alongside its heating load, Indianapolis Nwfo carries 45.8 inches of precipitation in a normal year, inside PlainClimate's wet range. Snowfall is not added to the interpretation because its annual value is missing. That distinction matters because a wet annual total can arrive as rain, snow, or a mixture at different times.
These labels group NOAA 1991-2020 normals from Indianapolis Nwfo's primary station, so the winter figures are a thirty-year average and not a floor: a single hard season can run well below them. Treat each band as a descriptive range for Indianapolis Nwfo, not an official NOAA class or a year-ahead forecast.
Questions about Indianapolis Nwfo's climate
How much rain does Indianapolis Nwfo get? ▼
How cold does Indianapolis Nwfo get in winter? ▼
How much energy does heating and cooling require in Indianapolis Nwfo? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Indianapolis Nwfo's primary station: INDIANAPOLIS NWFO (USC00124260). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The conservative exact name-and-state crosswalk finds no Census place match, so PlainClimate treats this as a station-mapped location and does not claim it is a municipality. No exact Gazetteer row for Indianapolis Nwfo; facility counts that depend on place identity are therefore an upper bound, not a municipal census.
On this page every temperature, precipitation, and derived score for Indianapolis Nwfo comes from its primary NOAA station record. No figure on this page is typed in by an editor - each value is rendered from NOAA 1991-2020 U.S. Climate Normals. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 1991–2020 normals.