Climate and monthly weather forecastWilliamson, WV
Climate and monthly weather forecast
The climate of Williamson
Williamson, West Virginia, in the USA exemplifies a Humid subtropical climate according to the Köppen climate classification, coded as Cfa. This climate is characterized by the absence of a dry season, with precipitation spread evenly throughout the year. From the observed data, Williamson's annual average temperatures fluctuate between a low of 26.8°F (-2.9°C) to a high of 86°F (30°C).Throughout the year, the city witnesses varying degrees of humidity, rainfall, snowfall and wind. Relative humidity maintains an average range from 75% to 80% year-round, maintaining a fairly moist climate. Furthermore, rainfall totals average between 1.46" (37mm) to 3.27" (83mm) per month, being generally higher in the colder months and lower in the warmer months.
A stark juxtaposition to rainfall, snowfall is observed primarily in the colder months, peaking at 4.09" (104mm) in February. Conversely, no snow is typically seen from May through to September. The annually reported wind speeds per month fluctuate between averagely mild 3.9mph (6.3km/h) in August to a slightly breezier 6.4mph (10.3km/h) in April.
One notable characteristic of Williamson's weather is the absence of sunshine days in the colder months while the warmer months enjoy much more sunlight. The highest observed average amount of sun hours per day is 10.4 in August. The cloud cover percentage also ranges from 31% to 59%, with higher coverage in colder months and lower during warmer months.
Lastly, the combined monthly average of daylights and sunshine hours, from 9.6 hours in December to 14.7 hours in June, dictates the city's daylight duration altering significantly throughout the year.
The best time to visit Williamson
The most appealing time to visit Williamson would be between June and September. During these warmer months, temperatures are comfortably high, averaging between 78.6°F (25.9°C) and 86°F (30°C). Moreover, this period enjoys the most sunshine hours per day, making it perfect for outdoor activities.Also, June and July extend relatively lower rainfall averages of 2.36" (60mm) and 2.72" (69mm) respectively compared to other months. Hence, visitors can also expect fewer rainy days.
The worst time to visit Williamson
The least hospitable period to visit Williamson would be between December and February. During these winter months, temperatures sharply fall to average lows between 26.8°F (-2.9°C) and 30.2°F (-1°C), which may not be comfortable for those unaccustomed to the cold.Moreover, these months also record the maximum amount of snowfall, and the shorter daylight hours might restrict outdoor activities. Therefore, unless a visitor is fond of a winter wonderland, avoiding Williamson during these months would be advisable.
Spring weather in Williamson
During spring, spanning from March to May, Williamson experiences average high temperatures that gradually increase from 54°F (12.2°C) to 75.6°F (24.2°C), and lows that rise from 37.2°F (2.9°C) to 54°F (12.2°C). These temperatures combined with higher sunshine hours (an increase from 6.3 hours to 9.3 hours), render spring an ideal time to explore the city. The potentially largest drawback during this period is the precipitation, which tends to peak at 3.27" (83mm) in May.Summer weather in Williamson
Summer in Williamson, from June to August, delivers the highest average temperatures of the year, with highs between 78.6°F (25.9°C) to 86°F (30°C) and lows ranging from 59.6°F (15.3°C) to 63.1°F (17.3°C). Visitors can expect longer daylight hours, around 14.2 to 14.7 hours, with abundant sunshine averaging from 9.3 to 10.4 hours per day. Rainfall does slightly decrease during these months, providing an optimal climate for outdoor exploration.Autumn weather in Williamson
Autumn, extending from September to November, experiences comfortable temperatures as high averages decrease from 78.6°F (25.9°C) to 54°F (12.2°C), and lows fluctuate between 56.8°F (13.8°C) to 37.6°F (3.1°C). Rainfall averages decline gradually from 1.46" (37mm) in September to 2.01" (51mm) in November. Combined with diminishing daylight hours and cooler temperatures, this season offers a serene environment for exploring Williamson.Winter weather in Williamson
Winter months, from December to February, are characterized by the lowest temperatures, dropping to an average low of 26.8°F (-2.9°C) in January and an average high of 45°F (7.2°C) in February. This period also experiences increased precipitation, largely in the form of snowfall. The shorter daylight hours, roughly from 9.6 hours to 10.8 hours, and reduced sunshine hours, averaging between 4.1 to 5 hours, make winter a tranquil time for visiting Williamson.Weather in January
January in Williamson, West Virginia, USA experiences the lowest temperatures of the year, with a chilling average low of 26.8°F (-2.9°C) and a high of 40.1°F (4.5°C). Cold winds prevail, adding an extra chill to the air. Cloudy days are more common than clear ones, hindering visibility. Weather in January »Weather in February
The weather begins to transition from the peak of winter in February, with temperatures gradually increasing compared to January. February receives some of the highest snowfall of the year, covering the city of Williamson in a soft blanket of white. Weather in February »Weather in March
By March, the thickness of winter begins to thaw. Rising temperatures result in the disappearance of snow, replaced by increased rainfall. This transition month between winter and spring experiences a significant increase of daily sunshine hours and a rise in temperature, with a high peaking at 54°F (12.2°C). Weather in March »Weather in April
April ushers in the delightful spring season in Williamson. The temperatures continue their upward climb, reaching between 46°F (7.8°C) to 65.8°F (18.8°C) on average. Surroundings come alive with blossoming flowers and greening trees, as rainwater infuses life into the city. Weather in April »Weather in May
By May, the city revels in a full-blown spring, with temperatures rising to as high as 75.6°F (24.2°C). The city is bathed in a long stretch of sunlit days, encouraging locals and tourists to indulge in outdoor pursuits. As Williamson shakes off the cool grasp of winter and spring, it welcomes the warmth of summer. Weather in May »Weather in June
June sets the stage for a stunning summer, with temperatures steadily soaring up to an average high of 82.9°F (28.3°C). Sunshine drenches Williamson throughout the day, providing ample opportunity to revel in sunny soirees. The reduced rainfall and rise in temperatures make for pleasant and dry weather. Weather in June »Weather in July
July is the zenith of summer in Williamson, with temperatures hitting their peak at 86°F (30°C). The city is abuzz with outdoor activities, from picnics in parks to long scenic drives. Almost every day is sun-soaked, the warmth lingers even after sundown. Weather in July »Weather in August
By August, Williamson is deeply entrenched in summer, and the city continues to sizzle under the heat. The temperature range from 61°F (16.1°C) to 84.4°F (29.1°C) indicates the continuation of warm days and mildly cold nights. Weather in August »Weather in September
September offers a welcome respite from the relentless summer heat, signifying the start of the balmy fall season. The temperatures begin to fall, averaging between 56.8°F (13.8°C) and 78.6°F (25.9°C). A slight nip can be felt in the air, especially during the nights. Weather in September »Weather in October
October is characterized by a noticeable drop in temperature when compared to September, averaging between 46.9°F (8.3°C) and 66.2°F (19°C). Williamson is set ablaze with the vibrant colors of fall, making it a beautiful sight to behold. Weather in October »Weather in November
In November, the temperatures take a dip, ranging from 37.6°F (3.1°C) to 54°F (12.2°C). The city braces itself for the approaching winter. The trees shed their leaves, and landscapes morph into bare silhouettes. The reduced daylight coupled with cooler days is an indication to wrap up in warm clothing. Weather in November »Weather in December
December marks the arrival of winter. The average temperatures range from 33.1°F (0.6°C) to 45.1°F (7.3°C), mirroring the chilly weather conditions of January. The low temperature, coupled with the highest amount of snowfall, with up to 3.9" (99mm), bestows Williamson with a winter wonderland vibe. Weather in December »Updated: Jul 22, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Williamson's coldest weather arrives in January, when temperatures average a high of 40.1°F (4.5°C) and a low of 26.8°F (-2.9°C).
In Williamson, during the entire year, the rain falls for 163.6 days and collects up to 30.43" (773mm) of precipitation.
January through May, October through December are months with snowfall.
In Williamson, during the entire year, snow falls for 32.9 days and aggregates up to 16.81" (427mm) of snow.
January has the least sunshine of the year, with an average of 4.1h of sunshine.
The months with the lowest UV index are January, February and December, with an average maximum UV index of 2.
With an average relative humidity of 81%, February is the most humid month.
The wettest months are February and May, with an average 3.27" (83mm) of rainfall.
The month with the most snowfall is February, when snow falls for 7.3 days and typically aggregates up to 4.09" (104mm) of snow.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
June through September are months without snowfall.
June has the longest days of the year, with an average of 14h and 42min of daylight.
The months with the highest UV index in Williamson are June and August, with an average maximum UV index of 6.
Williamson, West Virginia, reaches its average highest temperatures in July, measuring 86°F (30°C) at the peak and 63.1°F (17.3°C) at the lowest.
July, August and November, with an average relative humidity of 75%, are the least humid months.
The month with the most sunshine is August, with an average of 10.4h of sunshine.
The month with the least rainfall is September, when the rain falls for 12.5 days and typically collects 1.46" (37mm) of precipitation.
December has the shortest days of the year, with an average of 9h and 36min of daylight.
Average temperature
Williamson, WV
The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is January (40.1°F).
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).
Average pressure
Williamson, WV
- Average pressure in January:
30.15"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.1"Hg - Average pressure in April:
30"Hg - Average pressure in May:
30.02"Hg - Average pressure in June:
29.98"Hg
- Average pressure in July:
30.01"Hg - Average pressure in August:
30.02"Hg - Average pressure in September:
30.06"Hg - Average pressure in October:
30.06"Hg - Average pressure in November:
30.16"Hg - Average pressure in December:
30.14"Hg
The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed
Williamson, WV
- Average wind speed in January:
6.3mph - Average wind speed in February:
6.3mph - Average wind speed in March:
6.2mph - Average wind speed in April:
6.4mph - Average wind speed in May:
5.5mph - Average wind speed in June:
4.8mph
- Average wind speed in July:
4.3mph - Average wind speed in August:
3.9mph - Average wind speed in September:
4.2mph - Average wind speed in October:
4.8mph - Average wind speed in November:
5.2mph - Average wind speed in December:
5.8mph
The windiest month (with the highest average wind speed) is April (6.4mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).
Average humidity
Williamson, WV
The month with the highest relative humidity is February (81%).
The months with the lowest relative humidity are July, August and November (75%).
Average rainfall
Williamson, WV
- Average rainfall in January:
2.4" - Average rainfall in February:
3.27" - Average rainfall in March:
2.83" - Average rainfall in April:
2.83" - Average rainfall in May:
3.27" - Average rainfall in June:
2.72"
- Average rainfall in July:
2.36" - Average rainfall in August:
1.93" - Average rainfall in September:
1.46" - Average rainfall in October:
2.44" - Average rainfall in November:
2.01" - Average rainfall in December:
2.91"
The wettest months (with the highest rainfall) are February and May (3.27").
The driest month (with the least rainfall) is September (1.46").
Average rainfall days
Williamson, WV
- Average rainfall days in January:
10.8 days - Average rainfall days in February:
11.8 days - Average rainfall days in March:
14.9 days - Average rainfall days in April:
16.7 days - Average rainfall days in May:
18.2 days - Average rainfall days in June:
16.1 days
- Average rainfall days in July:
17.1 days - Average rainfall days in August:
13.3 days - Average rainfall days in September:
12.5 days - Average rainfall days in October:
11.1 days - Average rainfall days in November:
10.1 days - Average rainfall days in December:
11 days
The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is November (10.1 days).
Average snowfall
Williamson, WV
- Average snowfall in January:
3.62" - Average snowfall in February:
4.09" - Average snowfall in March:
3.11" - Average snowfall in April:
0.43" - Average snowfall in May:
0.2" - Average snowfall in June:
0"
The month with the highest snowfall is February (4.09").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Williamson, WV
- Average snowfall days in January:
9.8 days - Average snowfall days in February:
7.3 days - Average snowfall days in March:
4.8 days - Average snowfall days in April:
1.3 days - Average snowfall days in May:
0.3 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.9 days - Average snowfall days in November:
2.5 days - Average snowfall days in December:
6 days
The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Williamson, WV
- Average daylight in January:
9h and 54min - Average daylight in February:
10h and 48min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 12min - Average daylight in May:
14h and 12min - Average daylight in June:
14h and 42min
- Average daylight in July:
14h and 30min - Average daylight in August:
13h and 36min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 12min - Average daylight in December:
9h and 36min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January:
4h and 6min - Average sunshine in February:
5h and 0min - Average sunshine in March:
6h and 18min - Average sunshine in April:
8h and 24min - Average sunshine in May:
9h and 18min - Average sunshine in June:
10h and 6min
- Average sunshine in July:
10h and 12min - Average sunshine in August:
10h and 24min - Average sunshine in September:
8h and 18min - Average sunshine in October:
6h and 18min - Average sunshine in November:
5h and 48min - Average sunshine in December:
4h and 30min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days
Williamson, WV
- Average sunshine days in January:
12.6 days - Average sunshine days in February:
11.3 days - Average sunshine days in March:
12.5 days - Average sunshine days in April:
11.7 days - Average sunshine days in May:
10.5 days - Average sunshine days in June:
12 days
- Average sunshine days in July:
12 days - Average sunshine days in August:
15.2 days - Average sunshine days in September:
15.5 days - Average sunshine days in October:
17.7 days - Average sunshine days in November:
17.6 days - Average sunshine days in December:
15.5 days
The month with the most sunshine days is October (17.7 days).
The month with the least sunshine days is May (10.5 days).
Average UV index
Williamson, WV
The months with the highest UV index are June and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover
Williamson, WV
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility
Williamson, WV
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
