Antelope Ranger Station, South Dakota climate: Climate normals at a NOAA weather station
Antelope Ranger Station's normal year runs from 5°F January nights to 85°F July afternoons. (NOAA 1991-2020 normals)
In metric: a yearly mean of 6.3°C, January lows of −15°C, July highs of 30°C.
- NOAA stationAntelope Ranger Station
- Station IDUSC00390223
- Location45.53°N 103.33°W
- Elevation2,820 ft (860 m)
On October 22, the normal high in Antelope Ranger Station is 55°F and the normal low 28°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Antelope Ranger Station.
- Jan 30° 5°
- Feb 34° 8°
- Mar 44° 19°
- Apr 55° 29°
- May 66° 40°
- Jun 76° 49°
- Jul 85° 55°
- Aug 86° 53°
- Sep 75° 42°
- Oct 58° 30°
- Nov 44° 18°
- Dec 33° 8°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like at Antelope Ranger Station each month?
July is the warmest month, with normal highs of 85°F; January the coldest, with normal lows of 5°F.
| Month | High | Low | Mean | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|
| January | 30°F | 5°F | 17.5°F | – | <1 | 31 | 9 h |
| February | 34°F | 8°F | 20.9°F | – | <1 | 28 | 10 h 20 min |
| March | 44°F | 19°F | 31.2°F | – | <1 | 28 | 11 h 50 min |
| April | 55°F | 29°F | 42.0°F | – | <1 | 19 | 13 h 30 min |
| May | 66°F | 40°F | 52.8°F | – | <1 | 6 | 14 h 50 min |
| June | 76°F | 49°F | 62.9°F | – | 2 | <1 | 15 h 40 min |
| July | 85°F | 55°F | 70.4°F | – | 12 | <1 | 15 h 20 min |
| August | 86°F | 53°F | 69.5°F | – | 12 | <1 | 14 h 10 min |
| September | 75°F | 42°F | 58.5°F | – | 3 | 5 | 12 h 40 min |
| October | 58°F | 30°F | 44.0°F | – | <1 | 18 | 11 h |
| November | 44°F | 18°F | 31.0°F | – | <1 | 28 | 9 h 30 min |
| December | 33°F | 8°F | 20.5°F | – | <1 | 31 | 8 h 40 min |
| Year (annual) | 57°F | 30°F | 43.4°F | – | 30 | 193 |
The same normals in °C and millimetres
| Month | High | Low | Mean |
|---|---|---|---|
| January | −1°C | −15°C | −8.1°C |
| February | 1°C | −13°C | −6.2°C |
| March | 7°C | −7°C | −0.4°C |
| April | 13°C | −2°C | 5.6°C |
| May | 19°C | 4°C | 11.6°C |
| June | 25°C | 10°C | 17.2°C |
| July | 30°C | 13°C | 21.3°C |
| August | 30°C | 12°C | 20.8°C |
| September | 24°C | 6°C | 14.7°C |
| October | 14°C | −1°C | 6.7°C |
| November | 7°C | −8°C | −0.6°C |
| December | 1°C | −13°C | −6.4°C |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Redig (11 mi NE) (11 miles away), gets 51 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00390223; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
Which months are mildest at Antelope Ranger Station?
Normal highs sit between 65°F and 85°F in May, June and September.
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00390223.
When is the last frost at Antelope Ranger Station?
In Antelope Ranger Station, the last spring frost (32°F) comes after May 19 in half of years and after June 2 in one year in ten; the first autumn frost comes before September 19 in half of years and before September 3 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- May 191 year in 10 after June 2; 9 in 10 after May 7
- First autumn frost, half of years before
- September 191 year in 10 before September 3; 9 in 10 before October 2
NOAA puts the median frost-free season at 121 days, and the season without a hard freeze (28°F) at 140 days.
A hard freeze (28°F) comes after May 9 in half of springs and before September 28 in half of autumns.
Frost dates for every NOAA station in South Dakota · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00390223. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get at Antelope Ranger Station?
In a normal year in Antelope Ranger Station, 30 days a year reach 90°F (5 of them 100°F or more) and 193 nights fall to 32°F or colder.
- Days at 90°F or more
- 30a normal year
- Days at 100°F or more
- 5a normal year
- Nights at 32°F or colder
- 193a normal year
- Days that stay below freezing
- 57high of 32°F or less
Source: NOAA NCEI 1991-2020 annual normals, station USC00390223.
How sunny is it at Antelope Ranger Station?
Over a year 79% of the sunlight that would reach the ground under clear skies gets through the clouds at Antelope Ranger Station, 4.2 kWh per square metre a day. July is the sunniest month (87%) and April the cloudiest (73%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 77% | 1.9 |
| February | 79% | 2.9 |
| March | 74% | 3.9 |
| April | 73% | 5.0 |
| May | 74% | 6.0 |
| June | 80% | 6.8 |
| July | 87% | 7.0 |
| August | 86% | 6.0 |
| September | 82% | 4.5 |
| October | 75% | 3.0 |
| November | 75% | 2.0 |
| December | 73% | 1.5 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How many heating and cooling degree days does Antelope Ranger Station record?
A normal year at Antelope Ranger Station brings 8,317 heating degree days, 55% more than the median U.S. place (5,373), and 492 cooling degree days, 46% fewer than the median (908). Eight months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 2,159 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,472 | 0 |
| February | 1,235 | 0 |
| March | 1,049 | 0 |
| April | 691 | 1 |
| May | 386 | 9 |
| June | 126 | 62 |
| July | 34 | 201 |
| August | 39 | 178 |
| September | 237 | 40 |
| October | 652 | 1 |
| November | 1,019 | 0 |
| December | 1,378 | 0 |
| Year (annual) | 8,317 | 492 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00390223. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
How does Antelope Ranger Station's climate compare?
Antelope Ranger Station is warmer than 18 of the 100 places with their own NOAA record in South Dakota. Across the 7,247 U.S. stations with normals, its annual mean of 43.4°F is warmer than 13%.
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers.
Questions about Antelope Ranger Station's climate
What is the coldest month at Antelope Ranger Station?
January, with a normal high of 30°F and a normal low of 5°F. The warmest is July (85°F by day, 55°F at night).
Does it snow at Antelope Ranger Station?
Yes. NOAA publishes no 1991-2020 snowfall normal for the station; the nearest record that keeps one, Redig (11 mi NE) (11 miles away), records 51 inches of snow in a normal year.
How late can frost come at Antelope Ranger Station?
In half of years the last 32°F night comes after May 19; in one year in ten it comes after June 2. Waiting until June 2 leaves about a one-in-ten chance of a later frost.
Nearby and next
- South Dakota climateThe statewide normals and every place in the state
- Redig (11 mi NE), SD11 miles from this station, 45.1°F a year
- Buffalo, SD12 miles from this station, 45.5°F a year
- Ludlow (3 mi SSE), SD17 miles from this station, 44.0°F a year
- Ralph (1 mi N), SD22 miles from this station, 44.2°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made