Plummer Township has some of the coldest winter nights among U.S. towns
Expect July afternoons of about 86°. Its yearly precipitation falls short of 88% of U.S. towns. The latest 30-year average runs 1.3° warmer than 1901–2000’s, with January up the most. Keep the boiler serviced for the months from October to April, which average under 50°.
A year in Plummer Township at a glance
Each month’s typical high and low, and what it brings.
What stands out about Plummer Township’s climate
Compared with towns across the U.S., with Plummer Township’s place in South Dakota beside it.
What a year in Plummer Township feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 146 frost-free days a year
In half of years the last 32° night comes by May 7 and the first by October 1. Frost and day counts come from NOAA’s station at Gann Valley 3 Nne, SD, 14 miles from the town’s center, at about the same height.
The 2023 USDA map puts Plummer 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 38 inches of snow a winter
Snow, measured at White Lake, SD, falls mostly in February. Precipitation (rain plus melted snow) adds up to 23 inches a year; June is the wettest month and January the driest. Rain or snow falls on about 60 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Plummer Township
91% 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 Gann Valley 3 Nne, SD.
Living with Plummer Township’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
146 frost-free days in zone 4b. The last frost comes by May 7 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Oct 1.
Months with highs of 62–84° and lows of 40° or more: May, June, August and September.
Parks & trails →Cold waves are 60% of the yearly building losses FEMA expects in Plummer Township from natural hazards, the largest share. Normals are averages; the hazards page covers the extremes.
Natural hazards →Plummer Township and its neighbors
Every town next door is within a degree of Plummer Township in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Plummer 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 |
|---|---|---|---|---|
| Plummer Township, SD | 8° | 86° | 23" | 38" |
| Sioux City, IA | 10° | 86° | 29" | 36" |
| Schuyler, NE | 13° | 87° | 29" | 36" |
| Marshall, MN | 6° | 84° | 28" | 44" |
| Gypsum, CO | 11° | 86° | 14" | 39" |
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 Plummer Township averaged 1.3° warmer than the 1900s. The biggest change is in January (+3.8°).
A smaller shift than in 51% 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 Plummer Township compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Plummer Township’s place among South Dakota’s.
Plummer Township weather by month
Highs, lows and precipitation from NOAA’s grid at Plummer Township’s center; snow, wet days and snow on the ground from White Lake, SD. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 28° | 8° | 0.5" | 7.1" | 3 | 16 | 8° – 34° |
| February | 33° | 12° | 0.7" | 8.4" | 4 | 13 | 7° – 33° |
| March | 45° | 23° | 1.0" | 5.2" | 4 | 7 | 23° – 49° |
| April | 58° | 33° | 2.5" | 5.4" | 7 | 3 | 36° – 52° |
| May | 69° | 45° | 3.4" | 0.0" | 8 | 0 | 52° – 63° |
| June | 79° | 56° | 3.8" | 0.0" | 8 | 0 | 63° – 72° |
| July | 86° | 61° | 2.9" | 0.0" | 6 | 0 | 65° – 80° |
| August | 84° | 59° | 2.8" | 0.0" | 6 | 0 | 66° – 75° |
| September | 76° | 49° | 2.5" | 0.0" | 5 | 0 | 56° – 68° |
| October | 61° | 36° | 1.9" | 0.8" | 5 | 1 | 41° – 53° |
| November | 45° | 23° | 0.7" | 3.7" | 3 | 5 | 24° – 43° |
| December | 32° | 13° | 0.6" | 7.1" | 3 | 13 | 10° – 29° |
| Year | 58° | 35° | 23.3" | 37.7" | 60 | 56 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 7° to 33°. June is the most reliable, staying within 9°.
Where Plummer 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 Plummer Township’s center.
- Snow: White Lake, SD.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Gann Valley 3 Nne, SD, 14 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 Plummer Township’s climate
What is the weather like in Plummer Township?
A typical July afternoon reaches 86°, a January night drops to 8°, and about 38 inches of snow falls in a normal winter. Colder January nights than 95% of U.S. towns; hotter July afternoons than 55% of U.S. towns.
How cold does it get in Plummer Township in winter?
January nights average 8°. About 179 nights a year reach 32° or below and 34 reach 0° or below. In the coldest January of the last 30 years the month averaged 8°.
How much snow does Plummer Township get?
About 38 inches in a normal winter at White Lake, SD, most of it in February, with snow on the ground about 56 days a year.
How hot does it get in Plummer Township?
July, with a typical high of 86° and a low of 61°. About 28 days a year reach 90° and 3 reach 100° (Gann Valley 3 Nne, SD).
When is the first and last frost in Plummer Township?
In half of years the last spring frost (32°) comes by May 7 and the first fall frost by October 1, about 146 frost-free days, at Gann Valley 3 Nne, SD.
What growing zone is Plummer 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 Plummer 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 Plummer Township getting warmer?
Yes: 1991–2020 averaged 1.3° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 51% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Plummer 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.