Midwinter lows in Greenwood Township sink below those of 92% of U.S. towns
Peak summer warmth arrives in July, with afternoons near 89°. Its yearly precipitation falls short of 89% of U.S. towns. Warming shows here too: 1.2° more than in 1901–2000, led by January. If you like long walks, May, June and September offer highs of 71–81°.
A year in Greenwood Township at a glance
Each month’s typical high and low, and what it brings.
What stands out about Greenwood Township’s climate
Compared with towns across the U.S., with Greenwood Township’s place in South Dakota beside it.
What a year in Greenwood Township feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 137 frost-free days a year
In half of years the last 32° night comes by May 12 and the first by September 28. Frost and day counts come from NOAA’s station at Kennebec, SD, 20 miles from the town’s center, 120 ft lower.
The 2023 USDA map puts Greenwood Township’s center in zone 5a: the coldest night of a typical winter, averaged over 1991–2020, reaches about −18°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
About 40 inches of snow a winter
Snow, measured at Kennebec, SD, falls mostly in February and December. Precipitation (rain plus melted snow) adds up to 21 inches a year; June is the wettest month and January the driest. Rain or snow falls on about 80 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Greenwood Township
88% of the work is heating, so the furnace matters far more than the air conditioner. Months averaging under 55° run from October through April.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Kennebec, SD.
Living with Greenwood Township’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
137 frost-free days in zone 5a. The last frost comes by May 12 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Sep 28.
Months with highs of 62–84° and lows of 40° or more: May, June and September. 2.0 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Greenwood Township from natural hazards, river flooding is the largest share (44%); heat waves, cold waves, winter storms and ice storms together are 33%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Greenwood Township and its neighbors
Every town next door is within a degree of Greenwood Township in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Greenwood Township’s, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| Greenwood Township, SD | 11° | 89° | 21" | 40" |
| Providence, UT | 15° | 89° | 19" | 44" |
| North Platte, NE | 14° | 89° | 21" | 28" |
| Sheridan, WY | 11° | 89° | 15" | 33" |
| Preston, ID | 14° | 89° | 15" | 52" |
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value. Snow and frost-free days come from the nearest weather station, so neighbors often share them.
Warmer than it used to be
The last 30 years in Greenwood Township averaged 1.2° warmer than the 1900s. The biggest change is in January (+3.7°).
A smaller shift than in 61% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How Greenwood Township compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Greenwood Township’s place among South Dakota’s.
Greenwood Township weather by month
Highs, lows and precipitation from NOAA’s grid at Greenwood Township’s center; snow, wet days and snow on the ground from Kennebec, SD. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 33° | 11° | 0.4" | 5.5" | 4 | 13 | 13° – 36° |
| February | 37° | 14° | 0.6" | 7.6" | 5 | 10 | 11° – 36° |
| March | 49° | 24° | 1.0" | 5.5" | 5 | 7 | 24° – 50° |
| April | 60° | 34° | 2.4" | 6.2" | 9 | 2 | 39° – 53° |
| May | 71° | 45° | 3.4" | 0.0" | 10 | 0 | 53° – 64° |
| June | 81° | 56° | 3.6" | 0.0" | 10 | 0 | 64° – 74° |
| July | 89° | 62° | 2.6" | 0.0" | 8 | 0 | 67° – 82° |
| August | 87° | 60° | 2.5" | 0.0" | 7 | 0 | 67° – 77° |
| September | 79° | 50° | 1.8" | 0.0" | 6 | 0 | 58° – 70° |
| October | 63° | 37° | 1.6" | 1.6" | 7 | 0 | 42° – 56° |
| November | 48° | 24° | 0.6" | 6.0" | 5 | 4 | 25° – 45° |
| December | 35° | 15° | 0.5" | 7.2" | 5 | 12 | 13° – 31° |
| Year | 61° | 36° | 20.9" | 39.6" | 80 | 47 |
How much a month can swing
A normal is an average. March swings the most: from 1991 to 2020 its average ranged from 24° to 50°. June is the most reliable, staying within 10°.
Where Greenwood Township’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at Greenwood Township’s center.
- Snow: Kennebec, SD.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Kennebec, SD, 20 miles from the town’s center, 120 ft lower; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about Greenwood Township’s climate
What is the weather like in Greenwood Township?
A typical July afternoon reaches 89°, a January night drops to 11°, and about 40 inches of snow falls in a normal winter. Colder January nights than 92% of U.S. towns; hotter July afternoons than 73% of U.S. towns.
How cold does it get in Greenwood Township in winter?
January nights average 11°. About 166 nights a year reach 32° or below and 20 reach 0° or below. In the coldest January of the last 30 years the month averaged 13°.
How much snow does Greenwood Township get?
About 40 inches in a normal winter at Kennebec, SD, most of it in February and December, with snow on the ground about 47 days a year.
How hot does it get in Greenwood Township?
July, with a typical high of 89° and a low of 62°. About 44 days a year reach 90° and 8 reach 100° (Kennebec, SD).
When is the first and last frost in Greenwood Township?
In half of years the last spring frost (32°) comes by May 12 and the first fall frost by September 28, about 137 frost-free days, at Kennebec, SD.
What growing zone is Greenwood Township in?
Zone 5a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −18°.
What is the best time of year to visit Greenwood Township?
By one simple rule (highs of 62–84° and lows of 40° or more), May, June and September. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Greenwood Township getting warmer?
Yes: 1991–2020 averaged 1.2° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 61% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Greenwood Township.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.