Jackson Township has some of the coldest winter nights among U.S. towns
In July the day’s top temperature is typically 86°. Precipitation is light here, less than falls on 88% of U.S. towns. January has warmed most since 1901–2000, part of a 0.8° rise. Keep the boiler serviced for the months from October to April, which average under 50°.
A year in Jackson Township at a glance
Each month’s typical high and low, and what it brings.
What stands out about Jackson Township’s climate
Compared with towns across the U.S., with Jackson Township’s place in South Dakota beside it.
What a year in Jackson Township feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 140 frost-free days a year
In half of years the last 32° night comes by May 9 and the first by September 28. Frost and day counts come from NOAA’s station at Forestburg 4 Nne, SD, 7 miles from the town’s center, at about the same height.
The 2023 USDA map puts Jackson Township’s center in zone 4b: the coldest night of a typical winter, averaged over 1991–2020, reaches about −20°. 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 26 inches of snow a winter
Snow, measured at Forestburg 4 Nne, SD, is heaviest from January through February, about 6 inches a month. Precipitation (rain plus melted snow) adds up to 24 inches a year; June is the wettest month and January the driest. Rain or snow falls on about 69 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Jackson Township
92% 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 Forestburg 4 Nne, SD.
Living with Jackson Township’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
140 frost-free days in zone 4b. The last frost comes by May 9 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, August and September. 2.3 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Jackson Township from natural hazards, river flooding is the largest share (34%); heat waves, cold waves, winter storms and ice storms together are 20%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Jackson Township and its neighbors
Every town next door is within a degree of Jackson Township in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Jackson 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 |
|---|---|---|---|---|
| Jackson Township, SD | 7° | 86° | 24" | 26" |
| Norfolk, NE | 12° | 86° | 28" | 30" |
| Sergeant Bluff, IA | 11° | 86° | 30" | 36" |
| Sidney, MT | 4° | 85° | 15" | 30" |
| Dickinson, ND | 5° | 83° | 16" | 35" |
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 Jackson Township averaged 0.8° warmer than the 1900s. The biggest change is in January (+2.6°).
A smaller shift than in 91% 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 Jackson Township compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Jackson Township’s place among South Dakota’s.
Jackson Township weather by month
Highs, lows and precipitation from NOAA’s grid at Jackson Township’s center; snow, wet days and snow on the ground from Forestburg 4 Nne, SD. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 26° | 7° | 0.5" | 6.0" | 4 | 21 | 5° – 32° |
| February | 32° | 11° | 0.7" | 5.6" | 4 | 14 | 5° – 33° |
| March | 44° | 22° | 1.1" | 2.8" | 4 | 9 | 22° – 48° |
| April | 58° | 34° | 2.6" | 3.0" | 7 | 2 | 36° – 53° |
| May | 70° | 46° | 3.3" | 0.0" | 9 | 0 | 53° – 64° |
| June | 80° | 57° | 3.8" | 0.0" | 9 | 0 | 64° – 73° |
| July | 86° | 62° | 3.1" | 0.0" | 7 | 0 | 66° – 81° |
| August | 83° | 59° | 2.9" | 0.0" | 7 | 0 | 66° – 75° |
| September | 76° | 50° | 2.4" | 0.0" | 6 | 0 | 57° – 69° |
| October | 61° | 36° | 2.0" | 0.4" | 6 | 1 | 41° – 53° |
| November | 44° | 22° | 0.8" | 3.7" | 3 | 5 | 23° – 42° |
| December | 30° | 12° | 0.6" | 4.8" | 3 | 18 | 8° – 28° |
| Year | 58° | 35° | 23.8" | 26.3" | 69 | 70 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 5° to 33°. August is the most reliable, staying within 9°.
Where Jackson 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 Jackson Township’s center.
- Snow: Forestburg 4 Nne, SD.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Forestburg 4 Nne, SD, 7 miles from the town’s center, at about the same height; 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 Jackson Township’s climate
What is the weather like in Jackson Township?
A typical July afternoon reaches 86°, a January night drops to 7°, and about 26 inches of snow falls in a normal winter. Colder January nights than 97% of U.S. towns; hotter July afternoons than 55% of U.S. towns.
How cold does it get in Jackson Township in winter?
January nights average 7°. About 168 nights a year reach 32° or below and 27 reach 0° or below. In the coldest January of the last 30 years the month averaged 5°.
How much snow does Jackson Township get?
About 26 inches in a normal winter at Forestburg 4 Nne, SD, heaviest from January through February, about 6 inches a month, with snow on the ground about 70 days a year.
How hot does it get in Jackson Township?
July, with a typical high of 86° and a low of 62°. About 26 days a year reach 90° and 2 reach 100° (Forestburg 4 Nne, SD).
When is the first and last frost in Jackson Township?
In half of years the last spring frost (32°) comes by May 9 and the first fall frost by September 28, about 140 frost-free days, at Forestburg 4 Nne, SD.
What growing zone is Jackson Township in?
Zone 4b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −20°.
What is the best time of year to visit Jackson Township?
By one simple rule (highs of 62–84° and lows of 40° or more), May, June, August and September. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Jackson Township getting warmer?
Yes: 1991–2020 averaged 0.8° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 91% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Jackson 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.