Zeona (10 mi SSW), South Dakota climate: Climate normals at a NOAA weather station
Zeona (10 mi SSW)'s normal year runs from 7°F January nights to 87°F July afternoons. (NOAA 1991-2020 normals)
In metric: a yearly mean of 7.2°C, January lows of −14°C, July highs of 31°C.
- NOAA stationZeona (10 mi SSW)
- Station IDUSC00399537
- Location45.07°N 103.00°W
- Elevation2,730 ft (832 m)
On October 23, the normal high in Zeona (10 mi SSW) 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 Zeona (10 mi SSW).
- Jan 30° 7°
- Feb 34° 11°
- Mar 45° 21°
- Apr 56° 31°
- May 67° 41°
- Jun 78° 52°
- Jul 87° 58°
- Aug 87° 56°
- Sep 77° 45°
- Oct 59° 31°
- Nov 44° 20°
- Dec 34° 10°
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 Zeona (10 mi SSW) each month?
July is the warmest month, with normal highs of 87°F; January the coldest, with normal lows of 7°F.
| Month | High | Low | Mean | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|
| January | 30°F | 7°F | 18.1°F | – | <1 | 31 | 9 h 10 min |
| February | 34°F | 11°F | 22.2°F | – | <1 | 27 | 10 h 20 min |
| March | 45°F | 21°F | 33.0°F | – | <1 | 28 | 11 h 50 min |
| April | 56°F | 31°F | 43.7°F | – | <1 | 17 | 13 h 30 min |
| May | 67°F | 41°F | 54.1°F | – | 1 | 5 | 14 h 50 min |
| June | 78°F | 52°F | 65.1°F | – | 3 | <1 | 15 h 40 min |
| July | 87°F | 58°F | 72.6°F | – | 9 | <1 | 15 h 20 min |
| August | 87°F | 56°F | 71.2°F | – | 14 | <1 | 14 h 10 min |
| September | 77°F | 45°F | 60.7°F | – | 5 | 3 | 12 h 40 min |
| October | 59°F | 31°F | 45.4°F | – | 1 | 16 | 11 h |
| November | 44°F | 20°F | 32.0°F | – | <1 | 28 | 9 h 40 min |
| December | 34°F | 10°F | 22.0°F | – | <1 | 31 | 8 h 50 min |
| Year (annual) | 58°F | 32°F | 45.0°F | – | 31 | 187 |
The same normals in °C and millimetres
| Month | High | Low | Mean |
|---|---|---|---|
| January | −1°C | −14°C | −7.7°C |
| February | 1°C | −12°C | −5.4°C |
| March | 7°C | −6°C | 0.6°C |
| April | 13°C | −1°C | 6.5°C |
| May | 19°C | 5°C | 12.3°C |
| June | 26°C | 11°C | 18.4°C |
| July | 31°C | 14°C | 22.6°C |
| August | 30°C | 13°C | 21.8°C |
| September | 25°C | 7°C | 15.9°C |
| October | 15°C | 0°C | 7.4°C |
| November | 7°C | −7°C | 0.0°C |
| December | 1°C | −12°C | −5.6°C |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Hoover (14 miles away), gets 48 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00399537; 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 Zeona (10 mi SSW)?
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 USC00399537.
When is the last frost at Zeona (10 mi SSW)?
In Zeona (10 mi SSW), the last spring frost (32°F) comes after May 11 in half of years and after May 27 in one year in ten; the first autumn frost comes before September 28 in half of years and before September 12 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 111 year in 10 after May 27; 9 in 10 after April 30
- First autumn frost, half of years before
- September 281 year in 10 before September 12; 9 in 10 before October 10
NOAA puts the median frost-free season at 137 days, and the season without a hard freeze (28°F) at 155 days.
A hard freeze (28°F) comes after May 1 in half of springs and before October 4 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 USC00399537. 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 Zeona (10 mi SSW)?
In a normal year in Zeona (10 mi SSW), 31 days a year reach 90°F (4 of them 100°F or more) and 187 nights fall to 32°F or colder.
- Days at 90°F or more
- 31a normal year
- Days at 100°F or more
- 4a normal year
- Nights at 32°F or colder
- 187a normal year
- Days that stay below freezing
- 57high of 32°F or less
The highest temperature in this station's record (since 1952) is 109°F, on June 30, 2002; the lowest is −43°F, on February 9, 1994.
The wettest calendar year on that record is 1982, with 23.36 in; the snowiest season is 1985–86, with 77.5 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00399537; records: ACIS (NOAA Regional Climate Centers), station USC00399537. Records use complete months only; a month missing more than three days is left out.
How sunny is it at Zeona (10 mi SSW)?
Over a year 79% of the sunlight that would reach the ground under clear skies gets through the clouds at Zeona (10 mi SSW), 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 Zeona (10 mi SSW) record?
A normal year at Zeona (10 mi SSW) brings 7,896 heating degree days, 47% more than the median U.S. place (5,373), and 645 cooling degree days, 29% 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 2,474 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,452 | 0 |
| February | 1,200 | 0 |
| March | 991 | 0 |
| April | 642 | 1 |
| May | 351 | 13 |
| June | 88 | 91 |
| July | 16 | 251 |
| August | 26 | 220 |
| September | 194 | 65 |
| October | 612 | 3 |
| November | 990 | 0 |
| December | 1,334 | 0 |
| Year (annual) | 7,896 | 645 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00399537. 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 Zeona (10 mi SSW)'s climate compare?
Zeona (10 mi SSW) is warmer than 38 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 45.0°F is warmer than 19%.
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers.
Questions about Zeona (10 mi SSW)'s climate
What is the coldest month at Zeona (10 mi SSW)?
January, with a normal high of 30°F and a normal low of 7°F. The warmest is July (87°F by day, 58°F at night).
Does it snow at Zeona (10 mi SSW)?
Yes. NOAA publishes no 1991-2020 snowfall normal for the station; the nearest record that keeps one, Hoover (14 miles away), records 48 inches of snow in a normal year.
How late can frost come at Zeona (10 mi SSW)?
In half of years the last 32°F night comes after May 11; in one year in ten it comes after May 27. Waiting until May 27 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
- Hoover, SD14 miles from this station, 43.8°F a year
- Maurine (12 mi SW), SD25 miles from this station, 45.1°F a year
- Redig (11 mi NE), SD28 miles from this station, 45.1°F a year
- Newell, SD32 miles from this station, 45.7°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made