Spink County Courthouse · Photo: JERRYE AND ROY KLOTZ MD · CC BY-SA 3.0Redfield’s winters are colder and snowier than most of the U.S.
A typical July afternoon reaches 85°, a January night drops to 5°, and about 43 inches of snow falls in a normal winter.
A year in Redfield at a glance
Each month’s typical high and low, and what it brings.
What stands out about Redfield’s climate
Compared with towns across the U.S., with Redfield’s place in South Dakota beside it.
What a year in Redfield feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 145 frost-free days a year
In half of years the last 32° night comes by May 8 and the first by October 1. Frost and day counts come from NOAA’s station at Redfield, SD, 0.6 miles from the town’s center, at about the same height.
The 2023 USDA map puts Redfield’s center in zone 4b: the coldest night of a typical winter, averaged over 1991–2020, reaches about −24°. 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 43 inches of snow a winter
Snow, measured at Mellette 4 W, SD, falls mostly in January and December. Precipitation (rain plus melted snow) adds up to 22 inches a year; June is the wettest month and January the driest. Rain or snow falls on about 88 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Redfield
93% 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 Redfield, SD.
Living with Redfield’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
145 frost-free days in zone 4b. The last frost comes by May 8 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. 1.0 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Redfield from natural hazards, river flooding is the largest share (40%); heat waves, cold waves, winter storms and ice storms together are 40%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Redfield and similar climates
TownRatings has no climate map of the towns around Redfield yet.
Climates most like Redfield’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 |
|---|---|---|---|---|
| Redfield, SD | 5° | 85° | 22" | 43" |
| Bismarck, ND | 3° | 84° | 18" | 51" |
| Redwood Falls, MN | 6° | 83° | 29" | 44" |
| Sidney, MT | 4° | 85° | 15" | 30" |
| Sheldon, IA | 7° | 84° | 30" | 41" |
Temperatures and precipitation come from NOAA’s 5 km grid; snow and day counts from the stations named on this page.
Warmer than it used to be
The last 30 years in Redfield averaged 0.6° warmer than the 1900s. The biggest change is in January (+2.7°).
A smaller shift than in 95% 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 Redfield compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Redfield’s place among South Dakota’s.
Redfield weather by month
Highs, lows and precipitation from NOAA’s grid at Redfield’s center; snow, wet days and snow on the ground from Mellette 4 W, SD. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | 30-yr range |
|---|---|---|---|---|---|---|
| January | 24° | 5° | 0.5" | 8.5" | 6 | 1° – 29° |
| February | 29° | 9° | 0.6" | 7.8" | 6 | 2° – 31° |
| March | 42° | 21° | 1.0" | 5.6" | 6 | 21° – 45° |
| April | 57° | 32° | 2.1" | 5.4" | 8 | 35° – 52° |
| May | 69° | 45° | 3.3" | 0.0" | 11 | 52° – 64° |
| June | 79° | 56° | 3.7" | 0.0" | 11 | 62° – 72° |
| July | 85° | 60° | 3.3" | 0.0" | 9 | 64° – 78° |
| August | 83° | 58° | 2.3" | 0.0" | 8 | 65° – 75° |
| September | 75° | 48° | 2.2" | 0.0" | 7 | 55° – 66° |
| October | 59° | 35° | 2.0" | 0.9" | 7 | 40° – 51° |
| November | 42° | 21° | 0.6" | 5.9" | 5 | 20° – 42° |
| December | 29° | 10° | 0.6" | 9.3" | 6 | 6° – 28° |
| Year | 56° | 33° | 22.0" | 43.4" | 88 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 2° to 31°. June is the most reliable, staying within 10°.
Where Redfield’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 Redfield’s center.
- Snow: Mellette 4 W, SD.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Redfield, SD, 0.6 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 Redfield’s climate
What is the weather like in Redfield?
A typical July afternoon reaches 85°, a January night drops to 5°, and about 43 inches of snow falls in a normal winter. Colder January nights than all but 181 U.S. towns; cooler July afternoons than 52% of U.S. towns.
How cold does it get in Redfield in winter?
January nights average 5°. About 179 nights a year reach 32° or below and 38 reach 0° or below. In the coldest January of the last 30 years the month averaged 1°.
How much snow does Redfield get?
About 43 inches in a normal winter at Mellette 4 W, SD, most of it in January and December.
How hot does it get in Redfield?
July, with a typical high of 85° and a low of 60°. About 17 days a year reach 90° and 1 reach 100° (Redfield, SD).
When is the first and last frost in Redfield?
In half of years the last spring frost (32°) comes by May 8 and the first fall frost by October 1, about 145 frost-free days, at Redfield, SD.
What growing zone is Redfield in?
Zone 4b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −24°.
What is the best time of year to visit Redfield?
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 Redfield getting warmer?
Yes: 1991–2020 averaged 0.7° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 95% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Redfield.
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.