Greenwood, Indiana climate: NOAA's gridded normals for the city, beside the nearest station records
NOAA's gridded 1991-2020 normals put Greenwood's center at January lows of 20°F and July highs of 85°F, a yearly mean of 52.5°F and 44.2 inches of precipitation. No NOAA station keeps a record under the city's name. The nearest station record, Beech Grove (8 miles N, 845 ft), has January lows of 19°F and July highs of 84°F.
68,175 people (Census Bureau 2024). Distances and directions are from the city's center.
- Jan 36° 20°
- Feb 40° 23°
- Mar 51° 32°
- Apr 64° 42°
- May 73° 52°
- Jun 81° 61°
- Jul 85° 65°
- Aug 83° 62°
- Sep 78° 55°
- Oct 65° 44°
- Nov 51° 33°
- Dec 40° 25°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
The months above are NOAA's gridded normals at Greenwood's center.
What is each month like in Greenwood?
NOAA's grid estimates the normals every 5 km or so from the stations around each point, terrain included. It smooths between stations, so night lows at the heart of a large city can run warmer than the grid shows: at five big-city airports we compared, the grid's highs were within about 1°F of the station and its lows 1-6°F cooler. The nearest record's high and low are beside each month.
| Month | High | Low | Mean | Precip. | Beech Grove high | Beech Grove low |
|---|---|---|---|---|---|---|
| January | 36°F | 20°F | 27.7°F | 3.06 | 34°F | 19°F |
| February | 40°F | 23°F | 31.8°F | 2.53 | 39°F | 22°F |
| March | 51°F | 32°F | 41.2°F | 3.48 | 50°F | 31°F |
| April | 64°F | 42°F | 52.5°F | 4.54 | 62°F | 41°F |
| May | 73°F | 52°F | 62.7°F | 4.89 | 72°F | 52°F |
| June | 81°F | 61°F | 71.4°F | 5.11 | 81°F | 62°F |
| July | 85°F | 65°F | 74.5°F | 4.23 | 84°F | 64°F |
| August | 83°F | 62°F | 72.8°F | 3.39 | 83°F | 63°F |
| September | 78°F | 55°F | 66.3°F | 3.09 | 77°F | 55°F |
| October | 65°F | 44°F | 54.5°F | 3.33 | 65°F | 44°F |
| November | 51°F | 33°F | 42.2°F | 3.44 | 51°F | 33°F |
| December | 40°F | 25°F | 32.4°F | 3.10 | 39°F | 24°F |
In metric: a yearly mean of 11.4°C, January lows of −7°C, July highs of 29°C and 1,122 mm of precipitation a year.
Source: NOAA NCEI U.S. Monthly Gridded Climate Normals 1991-2020 (nClimGrid, accession 0245564); NOAA NCEI 1991-2020 station normals. The grid cell holding the city's Census center point.
What do the station records around Greenwood say?
Each row is a NOAA station's own 1991-2020 normals, with the snow and frost dates the grid does not give. A record downhill or nearer the coast than the city can run warmer, one uphill cooler: compare the elevations.
| Record | Where | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| Beech GroveIndianapolis SE Side | 8 mi N | 845 ft | 51.8°F | 19°F | 84°F | 44.6 | – | April 20 |
| FranklinFranklin Wastewater Treatment Plant | 10 mi S | 720 ft | 51.6°F | 18°F | 84°F | 45.4 | 17 | April 20 |
| IndianapolisIndianapolis International Airport | 12 mi NW | 790 ft | 53.6°F | 21°F | 85°F | 43.6 | 26 | April 15 |
Source: NOAA NCEI 1991-2020 U.S. Climate Normals; place center and population: Census Bureau 2024. Last frost: the median last spring date of 32°F.
How much snow, how late a frost, what zone and how much sun in Greenwood?
NOAA's grid gives no snow, frost dates or records, so these come from the nearest station record, Beech Grove (8 miles N, 845 ft). NOAA publishes no snowfall normal for it; the nearest record that has one, Franklin (10 miles S), gets 17 inches a year. The last spring frost (32°F) comes after April 20 in half of years and the first autumn frost before October 21. Its record high is 104°F (1988) and its record low −20°F (1977) (kept since 1951).
The USDA's 2023 Plant Hardiness Zone Map puts Greenwood in zones 6a to 6b across its 2 ZIP code areas.
Over a year 73% of the sunlight that would reach the ground under clear skies gets through the clouds in the area (4.0 kWh per square metre a day, NASA POWER 2001-2020); August is the sunniest month (81%) and December the cloudiest (59%).
Beech Grove's page has its months, frost probabilities, records by month and recent years. NOAA's grid has monthly figures only, so there are no day-by-day month pages for Greenwood; the nearest record's month pages have them.
Source: NOAA NCEI 1991-2020 normals, station USC00124272; records: ACIS; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; sunshine: NASA POWER.
How does the climate vary across Greenwood, ZIP code by ZIP code?
2 ZIP code areas lie wholly or partly in Greenwood. On NOAA's grid 46142 is the warmest (52.8°F a year) and 46143 the coolest (52.5°F), so the city is nearly uniform. Each row also names the nearest station record and its frost dates.
| ZIP code | Zone | Year | Jan low | Jul high | Precip. | Nearest record | Last frost | First frost |
|---|---|---|---|---|---|---|---|---|
| 46142 | 6b | 52.8°F | 20°F | 85°F | 43.8 | Indianapolis (8 mi) | April 15 | October 26 |
| 46143 | 6a | 52.5°F | 20°F | 85°F | 44.2 | Beech Grove (9 mi) | April 20 | October 21 |
Source: Census Bureau 2020 ZCTA-to-place relationship file and ZCTA centers; NOAA NCEI gridded and station normals, 1991-2020. A ZIP area counts when at least a tenth of its land (and 0.5 km²) is in the city; its figures are the grid cell at its center; frost dates are the nearest record's medians of 32°F.