Deadwood, SD Climate: Temperature by Month
Explore NOAA NCEI's 1991–2020 climate normals → and a clearly labeled PlainClimate comfort calculation
30-year climate normals (1991-2020) from Deadwood's primary NOAA station, DEADWOOD.
The climate verdict for Deadwood
Deadwood, South Dakota has a mixed annual climate rather than one dominant extreme. Its NOAA normal shows an annual average of 45°F. July is the warmest month at 69°F and January the coldest at 26°F.
- 45°F
- annual average temperature (NOAA normal)
- 124 days
- growing season, frost-free days
Deadwood: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00392207 · Deadwood, SD 45°F mean
TEMP-COOL · RANK-COOL · PHOTO-FINISH · PRCP-UNK · SWING-MID · COMF-UNK · LOAD-HEAT · STN-1 · BOOK-PART
- TEMP-COOL 45°F
- RANK-COOL #1,372
- PHOTO-FINISH ≈ Yale
- PRCP-UNK Rain n/a
- SWING-MID 43°F
- COMF-UNK Comfort n/a
- LOAD-HEAT 7,495 HDD
- STN-1 USC00392207
- BOOK-PART 4/6 fields
Nearest mean-temperature peer: Yale, MI (+ 0 °F mean)
Instrument codes from this station's NOAA 1991–2020 normals, mean temperature, corpus warmth rank, photo-finish peer station, precipitation band, seasonal swing, comfort composite, degree-day load, and field book, not a livability rating.
Mean-temperature neighbourhood
Nationwide NOAA normal poles and nearest peers, not a reprint of every SD station list.
- Hot Big Horn, WY 46°F
- Deadwood (this station) 45°F
- Cold Watertown, NY 45°F
- Near Yale, MI 45°F
- Near Keene, NH 45°F
Climate Living Index · Deadwood
Deadwood: 17/100 · grade F
Deadwood publishes 3 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 3 missing weights rescale to 100.
PlainClimate-derived for Deadwood, not an official NOAA rating. Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Annual temperature balance | 45.4°F · 22.1° from 67.5°F | 21/100 · F |
| Normal heat + freeze calendar | 195 calendar days | 17/100 · F |
| Frost-free season | 124 days/year | 9/100 · F |
Deadwood · 2026-08-04 · NOAA NCEI Climate Normals · method .
National standing · heating-led station
Where Deadwood sits across the climate record
Available NOAA 1991–2020 fields for Deadwood are ranked only against stations that publish the same field, missing metrics stay blank rather than estimated.
- Annual temperature
- Cooler than 80%
- Among 6,861 stations, Deadwood sits in the cooler third of annual means.
- Seasonal temperature swing
- 50th percentile swing
- Typical seasonal amplitude versus 6,861 complete station-years.
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 38°F (3°C) | 14°F (-10°C) | 26°F (-3°C) | N/A | 30.5 | 0.0 |
| February | 39°F (4°C) | 14°F (-10°C) | 27°F (-3°C) | N/A | 27.2 | 0.0 |
| March | 48°F (9°C) | 22°F (-6°C) | 35°F (2°C) | N/A | 28.4 | 0.0 |
| April | 55°F (13°C) | 30°F (-1°C) | 42°F (6°C) | N/A | 18.9 | 0.0 |
| May | 65°F (18°C) | 39°F (4°C) | 52°F (11°C) | N/A | 8.8 | 0.1 |
| June | 75°F (24°C) | 49°F (10°C) | 62°F (17°C) | N/A | 0.4 | 1.2 |
| July | 83°F (28°C) | 56°F (13°C) | 69°F (21°C) | N/A | 0.0 | 6.7 |
| August | 82°F (28°C) | 54°F (12°C) | 68°F (20°C) | N/A | 0.3 | 5.1 |
| September | 73°F (23°C) | 44°F (7°C) | 59°F (15°C) | N/A | 3.9 | 1.6 |
| October | 58°F (15°C) | 31°F (0°C) | 45°F (7°C) | N/A | 16.1 | 0.0 |
| November | 47°F (8°C) | 22°F (-6°C) | 35°F (1°C) | N/A | 27.1 | 0.0 |
| December | 38°F (3°C) | 15°F (-10°C) | 26°F (-3°C) | N/A | 30.8 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 84°F around July 22, short of 90°F on every date, while 195 dates carry a normal low at or below freezing, the coldest 13°F near February 6.
The freezing stretch
The normal low stays at or below 32°F into April 25, then returns to freezing around October 14, covering 195 dates in all.
Derived from the normal daily minimum. This is a different measure from the 50%-probability frost dates shown elsewhere on this page, which come from NOAA’s frost product.
The widest day
September 12 carries the biggest normal gap between afternoon and dawn, 29°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Deadwood.
Where Deadwood Stands Nationally
Freezing is routine here by normals standards — the normal low reaches 32°F or colder on about 195 nights a year, more than most ranked stations.
Deadwood earns one nationally notable standing (outer quintile) against 6,860 NOAA 1991–2020 normals stations, middle-of-the-pack metrics stay silent here.
Monthly Precipitation
Average monthly rainfall
Frost Dates & Growing Season
First Fall Freeze
September 25
50% probability date
Last Spring Freeze
May 24
50% probability date
Growing Season
124 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
7,495
Higher = more heating needed
Cooling Degree Days
388
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside SD closest to Deadwood on two NOAA annual-normal axes (mean temperature and annual precipitation). Chip rows use distinct link sets.
Closest by average temperature
Nearest out-of-state peers by annual mean temperature (45°F here).
- Alberton, MT 45°F · 0.0°F off
- Augusta, MT 45°F · 0.0°F off
- Beloit, WI 45°F · 0.0°F off
- Fort Benton, MT 45°F · 0.0°F off
Data-derived climate profile
How Deadwood's climate pattern fits together
heating led · mid swing
Deadwood's energy balance leans toward cold weather: 7,495 annual heating degree days against 388 for cooling. Its 43.2°F seasonal range still makes the monthly rows more useful than the annual average alone.
Only about 124 days are frost-free in a normal year. That short interval is consistent with the cold-season signal, but the measure does not predict the exact first or last freeze in any one year.
July and January mark the typical warm and cold ends of the calendar in Deadwood's middle-range seasonal profile. The measured spread is 43.2°F. The annual average is 45°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
A moisture-range label is withheld because Deadwood's annual precipitation total is unavailable. Monthly source values remain visible where NOAA provides them, and no annual amount is reconstructed from incomplete data.
These labels group NOAA 1991-2020 normals from Deadwood's primary station, so the winter figures are a thirty-year average and not a floor: a single hard season can run well below them. Treat each band as a descriptive range for Deadwood, not an official NOAA class or a year-ahead forecast.
Questions about Deadwood's climate
How cold does Deadwood get in winter? ▼
How much energy does heating and cooling require in Deadwood? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Deadwood's primary station: DEADWOOD (USC00392207). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The 2024 Census Gazetteer identifies the exact name-and-state match as an incorporated place (GEOID 4615700). Match rule for Deadwood: exact normalized name + state only, no fuzzy expansion, so nearby differently spelled facilities stay unmatched.
On this page every temperature, precipitation, and derived score for Deadwood comes from its primary NOAA station record. No figure on this page is typed in by an editor - each value is rendered from NOAA 1991-2020 U.S. Climate Normals. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 1991–2020 normals.