Mannington, West Virginia climate: Normal weather by month, frost dates and records
Mannington's normal year runs from 19°F January nights to 84°F July afternoons, with 51.4 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 10.6°C, January lows of −7°C, July highs of 29°C, 1,307 mm of precipitation a year.
- NOAA stationMannington (8 mi WNW)
- Station IDUSC00465626
- Location39.54°N 80.46°W
- Elevation1,100 ft (335 m)
- Population1,909
On October 23, the normal high in Mannington is 63°F and the normal low 36°F, and the chance of measurable rain or snow is 37%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Mannington.
- Jan 38° 19°
- Feb 42° 20°
- Mar 52° 27°
- Apr 66° 36°
- May 74° 47°
- Jun 81° 55°
- Jul 84° 60°
- Aug 83° 58°
- Sep 77° 51°
- Oct 66° 39°
- Nov 53° 29°
- Dec 43° 24°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Mannington each month?
July is the warmest month, with normal highs of 84°F; January the coldest, with normal lows of 19°F. The most precipitation falls in July (5.64 in), the least in October (3.37 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 38°F | 19°F | 28.5°F | 4.41 | 18 | <1 | 27 | 9 h 40 min |
| February | 42°F | 20°F | 31.2°F | 3.99 | 16 | <1 | 25 | 10 h 40 min |
| March | 52°F | 27°F | 39.7°F | 4.36 | 14 | <1 | 23 | 11 h 50 min |
| April | 66°F | 36°F | 51.0°F | 4.32 | 15 | <1 | 12 | 13 h 10 min |
| May | 74°F | 47°F | 60.4°F | 4.92 | 15 | 1 | 3 | 14 h 20 min |
| June | 81°F | 55°F | 68.1°F | 4.44 | 13 | 3 | <1 | 15 h |
| July | 84°F | 60°F | 72.1°F | 5.64 | 13 | 6 | <1 | 14 h 40 min |
| August | 83°F | 58°F | 70.7°F | 4.10 | 11 | 5 | <1 | 13 h 50 min |
| September | 77°F | 51°F | 63.8°F | 4.17 | 11 | 2 | <1 | 12 h 30 min |
| October | 66°F | 39°F | 52.2°F | 3.37 | 11 | <1 | 9 | 11 h 10 min |
| November | 53°F | 29°F | 41.1°F | 3.57 | 13 | <1 | 20 | 10 h |
| December | 43°F | 24°F | 33.2°F | 4.15 | 17 | <1 | 26 | 9 h 20 min |
| Year (annual) | 63°F | 39°F | 51.0°F | 51.44 | 166 | 17 | 144 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 3°C | −7°C | −1.9°C | 112 mm |
| February | 6°C | −6°C | −0.4°C | 101 mm |
| March | 11°C | −3°C | 4.3°C | 111 mm |
| April | 19°C | 2°C | 10.6°C | 110 mm |
| May | 23°C | 8°C | 15.8°C | 125 mm |
| June | 27°C | 13°C | 20.1°C | 113 mm |
| July | 29°C | 16°C | 22.3°C | 143 mm |
| August | 28°C | 15°C | 21.5°C | 104 mm |
| September | 25°C | 10°C | 17.7°C | 106 mm |
| October | 19°C | 4°C | 11.2°C | 86 mm |
| November | 12°C | −1°C | 5.1°C | 91 mm |
| December | 6°C | −5°C | 0.7°C | 105 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Clarksburg 1 (20 miles away), gets 24 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00465626; 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.
When is the best weather to visit Mannington?
Normal highs sit between 65°F and 85°F in April, May, June, July, August, September and October. Of those, September has the fewest days with rain (11).
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 USC00465626.
When is the last frost in Mannington?
In Mannington, the last spring frost (32°F) comes after May 3 in half of years and after May 22 in one year in ten; the first autumn frost comes before October 10 in half of years and before September 27 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 31 year in 10 after May 22; 9 in 10 after April 19
- First autumn frost, half of years before
- October 101 year in 10 before September 27; 9 in 10 before October 26
NOAA puts the median frost-free season at 159 days, and the season without a hard freeze (28°F) at 182 days.
A hard freeze (28°F) comes after April 22 in half of springs and before October 22 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Mannington in zone 6b in ZIP code 26582, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Mannington's NOAA station is in zone 6a: the coldest night of a typical year reaches −9°F (20 complete years); the map interpolates between stations and terrain, so the station and the ZIP area can differ by half a zone.
Frost dates for every NOAA station in West Virginia · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00465626; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. 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 in Mannington?
In a normal year in Mannington, 17 days a year reach 90°F, 144 nights fall to 32°F or colder and 166 days bring measurable precipitation.
- Days at 90°F or more
- 17a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 144a normal year
- Days that stay below freezing
- 24high of 32°F or less
- Days with 0.01 inch of precipitation
- 166a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00465626.
How sunny is Mannington?
Over a year 70% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Mannington, 3.9 kWh per square metre a day. August is the sunniest month (78%) and December the cloudiest (55%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 55% | 1.7 |
| February | 59% | 2.5 |
| March | 63% | 3.5 |
| April | 68% | 4.7 |
| May | 70% | 5.4 |
| June | 75% | 6.0 |
| July | 76% | 5.8 |
| August | 78% | 5.4 |
| September | 77% | 4.5 |
| October | 69% | 3.1 |
| November | 67% | 2.1 |
| December | 55% | 1.4 |
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 much heating and cooling does Mannington need?
A normal year in Mannington brings 5,739 heating degree days, 7% more than the median U.S. place (5,373), and 667 cooling degree days, 26% fewer than the median (908). Seven months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 2,960 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,131 | 0 |
| February | 946 | 0 |
| March | 783 | 0 |
| April | 426 | 5 |
| May | 186 | 44 |
| June | 39 | 132 |
| July | 5 | 224 |
| August | 11 | 188 |
| September | 104 | 68 |
| October | 404 | 7 |
| November | 717 | 0 |
| December | 986 | 0 |
| Year (annual) | 5,739 | 667 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00465626. 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 Mannington's climate compare?
Mannington is warmer than 10 of the other 62 places with their own NOAA record in West Virginia, and wetter than 46. Across the 7,247 U.S. stations with normals, its annual mean of 51.0°F is warmer than 45%.
In the Köppen classification computed from these normals, Mannington is Dfa: continental, no dry season, hot summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Mannington share this climate record?
3 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Wallace, WV251 people · 10 mi S
- Rachel, WV167 people · 9 mi E
- Smithfield, WV98 people · 6 mi SW
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Mannington's climate
What is the coldest month in Mannington?
January, with a normal high of 38°F and a normal low of 19°F. The warmest is July (84°F by day, 60°F at night).
Does it snow in Mannington?
Yes. NOAA publishes no 1991-2020 snowfall normal for Mannington's NOAA station; the nearest record that keeps one, Clarksburg 1 (20 miles away), records 24 inches of snow in a normal year.
What is the rainiest month in Mannington?
July, with 5.64 in of precipitation in a normal year; the driest is October with 3.37 in.
What plant hardiness zone is Mannington in?
The USDA's 2023 map puts Mannington in zone 6b in ZIP code 26582, the nearest ZIP area. By the same method at Mannington's NOAA station, the coldest night of a typical year reaches −9°F (20 years, 1991-2020): zone 6a.
How late can frost come in Mannington?
In half of years the last 32°F night comes after May 3; in one year in ten it comes after May 22. Waiting until May 22 leaves about a one-in-ten chance of a later frost.
Nearby and next
- West Virginia climateThe statewide normals and every place in the state
- Burton, WV7 miles from this station, 51.1°F a year
- Fairmont, WV19 miles from this station, 53.6°F a year
- Clarksburg, WV21 miles from this station, 54.9°F a year
- Middlebourne, WV22 miles from this station, 51.6°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made