Rochford (2 mi WNW), South Dakota climate: Climate normals at a NOAA weather station
Rochford (2 mi WNW)'s normal year runs from 3°F January nights to 80°F July afternoons. (NOAA 1991-2020 normals)
In metric: a yearly mean of 3.8°C, January lows of −16°C, July highs of 27°C.
- NOAA stationRochford (2 mi WNW)
- Station IDUSC00397227
- Location44.13°N 103.75°W
- Elevation5,450 ft (1,661 m)
On October 23, the normal high in Rochford (2 mi WNW) is 53°F and the normal low 19°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Rochford (2 mi WNW).
- Jan 37° 3°
- Feb 37° 4°
- Mar 45° 12°
- Apr 51° 21°
- May 60° 31°
- Jun 71° 39°
- Jul 80° 44°
- Aug 79° 40°
- Sep 71° 32°
- Oct 56° 21°
- Nov 44° 12°
- Dec 37° 6°
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 Rochford (2 mi WNW) each month?
July is the warmest month, with normal highs of 80°F; January the coldest, with normal lows of 3°F.
| Month | High | Low | Mean | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|
| January | 37°F | 3°F | 19.7°F | – | <1 | 31 | 9 h 10 min |
| February | 37°F | 4°F | 20.7°F | – | <1 | 28 | 10 h 30 min |
| March | 45°F | 12°F | 28.3°F | – | <1 | 31 | 11 h 50 min |
| April | 51°F | 21°F | 36.1°F | – | <1 | 28 | 13 h 20 min |
| May | 60°F | 31°F | 45.1°F | – | <1 | 19 | 14 h 40 min |
| June | 71°F | 39°F | 55.1°F | – | <1 | 6 | 15 h 30 min |
| July | 80°F | 44°F | 61.7°F | – | 2 | 1 | 15 h 10 min |
| August | 79°F | 40°F | 59.5°F | – | 2 | 2 | 14 h |
| September | 71°F | 32°F | 51.3°F | – | <1 | 19 | 12 h 40 min |
| October | 56°F | 21°F | 38.8°F | – | <1 | 29 | 11 h 10 min |
| November | 44°F | 12°F | 28.2°F | – | <1 | 30 | 9 h 40 min |
| December | 37°F | 6°F | 21.3°F | – | <1 | 31 | 8 h 50 min |
| Year (annual) | 56°F | 22°F | 38.8°F | – | 5 | 255 |
The same normals in °C and millimetres
| Month | High | Low | Mean |
|---|---|---|---|
| January | 3°C | −16°C | −6.8°C |
| February | 3°C | −15°C | −6.3°C |
| March | 7°C | −11°C | −2.1°C |
| April | 11°C | −6°C | 2.3°C |
| May | 15°C | −1°C | 7.3°C |
| June | 22°C | 4°C | 12.8°C |
| July | 27°C | 7°C | 16.5°C |
| August | 26°C | 5°C | 15.3°C |
| September | 22°C | 0°C | 10.7°C |
| October | 13°C | −6°C | 3.8°C |
| November | 7°C | −11°C | −2.1°C |
| December | 3°C | −14°C | −5.9°C |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Pactola Dam (14 miles away), gets 61 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00397227; 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 Rochford (2 mi WNW)?
Normal highs sit between 65°F and 85°F in June, July, August 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 USC00397227.
How hot and how cold does it get at Rochford (2 mi WNW)?
In a normal year in Rochford (2 mi WNW), 5 days a year reach 90°F and 255 nights fall to 32°F or colder.
- Days at 90°F or more
- 5a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 255a normal year
- Days that stay below freezing
- 48high of 32°F or less
Source: NOAA NCEI 1991-2020 annual normals, station USC00397227.
How sunny is it at Rochford (2 mi WNW)?
Over a year 78% of the sunlight that would reach the ground under clear skies gets through the clouds at Rochford (2 mi WNW), 4.3 kWh per square metre a day. July is the sunniest month (86%) and April the cloudiest (71%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 75% | 1.9 |
| February | 76% | 2.9 |
| March | 74% | 4.0 |
| April | 71% | 5.0 |
| May | 72% | 5.9 |
| June | 80% | 6.8 |
| July | 86% | 7.0 |
| August | 86% | 6.0 |
| September | 82% | 4.7 |
| October | 75% | 3.1 |
| November | 75% | 2.1 |
| December | 72% | 1.6 |
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 Rochford (2 mi WNW) record?
A normal year at Rochford (2 mi WNW) brings 9,565 heating degree days, 78% more than the median U.S. place (5,373), and 55 cooling degree days, 94% fewer than the median (908). Ten months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 1,018 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,404 | 0 |
| February | 1,240 | 0 |
| March | 1,136 | 0 |
| April | 867 | 0 |
| May | 615 | 0 |
| June | 305 | 6 |
| July | 135 | 34 |
| August | 183 | 14 |
| September | 411 | 1 |
| October | 811 | 0 |
| November | 1,104 | 0 |
| December | 1,355 | 0 |
| Year (annual) | 9,565 | 55 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00397227. 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 Rochford (2 mi WNW)'s climate compare?
Rochford (2 mi WNW) is warmer than 0 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 38.8°F is warmer than 4%.
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers.
Questions about Rochford (2 mi WNW)'s climate
What is the coldest month at Rochford (2 mi WNW)?
January, with a normal high of 37°F and a normal low of 3°F. The warmest is July (80°F by day, 44°F at night).
Does it snow at Rochford (2 mi WNW)?
Yes. NOAA publishes no 1991-2020 snowfall normal for the station; the nearest record that keeps one, Pactola Dam (14 miles away), records 61 inches of snow in a normal year.
What plant hardiness zone is Rochford (2 mi WNW) in?
The USDA's 2023 map puts Rochford (2 mi WNW) in zone 4b in ZIP code 57745, the nearest ZIP area.
Nearby and next
- South Dakota climateThe statewide normals and every place in the state
- Pactola Dam, SD14 miles from this station, 42.1°F a year
- Lead, SD16 miles from this station, 46.3°F a year
- Johnson Siding, SD16 miles from this station, 45.1°F a year
- Hill City, SD17 miles from this station, 43.9°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made