Deadwood Historic District · Photo: The original uploader was Gorilla Jones at English Wikipedia. · CC BY-SA 3.0Deadwood gets about 184 inches of snow a winter, more than all but 29 U.S. towns
A typical July afternoon reaches 82°, a January night drops to 15°, and about 184 inches of snow falls in a normal winter.
A year in Deadwood at a glance
Each month’s typical high and low, and what it brings.
What stands out about Deadwood’s climate
Compared with towns across the U.S., with Deadwood’s place in South Dakota beside it.
What a year in Deadwood feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 133 frost-free days a year
In half of years the last 32° night comes by May 18 and the first by September 29. Frost and day counts come from NOAA’s station at Lead, SD, 2.5 miles from the town’s center, 320 ft higher.
The 2023 USDA map puts Deadwood’s center in zone 5b: the coldest night of a typical winter, averaged over 1991–2020, reaches about −15°. 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 184 inches of snow a winter
Snow, measured at Lead, SD, is heaviest from February through April, about 28 inches a month. Precipitation (rain plus melted snow) adds up to 28 inches a year; May is the wettest month and January the driest. Rain or snow falls on about 133 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Deadwood
94% of the work is heating, so the furnace matters far more than the air conditioner. Months averaging under 55° run from October through May.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Lead, SD.
Living with Deadwood’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
133 frost-free days in zone 5b. The last frost comes by May 18 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 29.
Months with highs of 62–84° and lows of 40° or more: June, July, August and September. 4.0 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Deadwood from natural hazards, river flooding is the largest share (71%); heat waves, cold waves, winter storms and ice storms together are 5%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Deadwood and similar climates
TownRatings has no climate map of the towns around Deadwood yet.
Climates most like Deadwood’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 |
|---|---|---|---|---|
| Deadwood, SD | 15° | 82° | 28" | 184" |
| Truckee, CA | 19° | 82° | 35" | 183" |
| Park City, UT | 18° | 81° | 23" | 153" |
| Edwards, CO | 11° | 79° | 20" | 189" |
| Eden, NY | 17° | 81° | 41" | 168" |
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 Deadwood averaged 1.2° warmer than the 1900s. The biggest change is in January (+3.5°).
A smaller shift than in 59% 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 Deadwood compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Deadwood’s place among South Dakota’s.
Deadwood weather by month
Highs, lows and precipitation from NOAA’s grid at Deadwood’s center; snow, wet days and snow on the ground from Lead, SD. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 37° | 15° | 1.3" | 24.8" | 11 | 28 | 17° – 35° |
| February | 37° | 16° | 1.5" | 26.2" | 11 | 23 | 9° – 36° |
| March | 46° | 22° | 1.9" | 27.6" | 11 | 20 | 23° – 45° |
| April | 53° | 29° | 3.2" | 29.0" | 13 | 8 | 35° – 48° |
| May | 63° | 39° | 4.8" | 6.7" | 14 | 1 | 43° – 57° |
| June | 74° | 49° | 3.7" | 0.9" | 13 | 0 | 55° – 68° |
| July | 82° | 55° | 2.8" | 0.0" | 12 | 0 | 61° – 74° |
| August | 81° | 54° | 2.2" | 0.0" | 9 | 0 | 62° – 72° |
| September | 71° | 45° | 1.8" | 1.8" | 8 | 1 | 51° – 64° |
| October | 57° | 33° | 2.7" | 19.3" | 11 | 5 | 36° – 51° |
| November | 45° | 23° | 1.3" | 22.3" | 10 | 14 | 24° – 44° |
| December | 37° | 16° | 1.3" | 25.3" | 10 | 21 | 18° – 33° |
| Year | 57° | 33° | 28.4" | 183.9" | 133 | 120 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 9° to 36°. August is the most reliable, staying within 11°.
Where Deadwood’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 Deadwood’s center.
- Snow: Lead, SD.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Lead, SD, 2.5 miles from the town’s center, 320 ft higher; 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 Deadwood’s climate
What is the weather like in Deadwood?
A typical July afternoon reaches 82°, a January night drops to 15°, and about 184 inches of snow falls in a normal winter. Colder January nights than 85% of U.S. towns; cooler July afternoons than 81% of U.S. towns.
How cold does it get in Deadwood in winter?
January nights average 15°. About 167 nights a year reach 32° or below and 13 reach 0° or below. In the coldest January of the last 30 years the month averaged 17°.
How much snow does Deadwood get?
About 184 inches in a normal winter at Lead, SD, heaviest from February through April, about 28 inches a month, with snow on the ground about 120 days a year.
How hot does it get in Deadwood?
July, with a typical high of 82° and a low of 55°. About 6 days a year reach 90° (Lead, SD).
When is the first and last frost in Deadwood?
In half of years the last spring frost (32°) comes by May 18 and the first fall frost by September 29, about 133 frost-free days, at Lead, SD.
What growing zone is Deadwood in?
Zone 5b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −15°.
What is the best time of year to visit Deadwood?
By one simple rule (highs of 62–84° and lows of 40° or more), June, July, August and September. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Deadwood getting warmer?
Yes: 1991–2020 averaged 1.2° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 59% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Deadwood.
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.