Climate and monthly weather forecastGrottoes, VA
Climate and monthly weather forecast
Weather in January
January, like December, in Grottoes, Virginia, is another cold winter month, with an average temperature fluctuating between 39°F (3.9°C) and 24.3°F (-4.3°C). During the coldest month, January, temperatures average a high of 39°F (3.9°C) and a low of 24.3°F (-4.3°C). Weather in January »Weather in February
The last month of the winter, February, is a frosty month in Grottoes, Virginia, with an average temperature varying between 27°F (-2.8°C) and 44.2°F (6.8°C). As February unfolds, the average high-temperature reaches a chilly 44.2°F (6.8°C), hinting at a slight fluctuation from the previous month. Weather in February »Weather in March
March, the first month of the spring in Grottoes, is a fresh month, with an average temperature fluctuating between 33.3°F (0.7°C) and 51.4°F (10.8°C). The shift into March is characterized by a subtle rise in the average high-temperature, transitioning from February's frosty 44.2°F (6.8°C) to a cool 51.4°F (10.8°C). Weather in March »Weather in April
April is a refreshing spring month in Grottoes, Virginia, with an average temperature varying between 63.5°F (17.5°C) and 43°F (6.1°C). Grottoes sees an increase in the average high-temperature with the arrival of April, moving from March's fresh 51.4°F (10.8°C) to a comfortable 63.5°F (17.5°C). Weather in April »Weather in May
The last month of the spring, May, is a pleasant month in Grottoes, Virginia, with an average temperature fluctuating between 72.9°F (22.7°C) and 51.8°F (11°C). A shift in the average high-temperature is noticeable in May, changing from an enjoyable 63.5°F (17.5°C) in April to a pleasant 72.9°F (22.7°C). Weather in May »Weather in June
June, the first month of the summer in Grottoes, is a moderately hot month, with an average temperature varying between 58.5°F (14.7°C) and 80.6°F (27°C). June comes with a subtle rise, with the average high-temperature adjusting from a pleasant 72.9°F (22.7°C) in May to a moderately hot 80.6°F (27°C). Weather in June »Weather in July
July, like June, in Grottoes, Virginia, is a moderately hot summer month, with an average temperature fluctuating between 62.2°F (16.8°C) and 84.6°F (29.2°C). July, recognised by an average high temperature of 84.6°F (29.2°C) and a low of 62.2°F (16.8°C), is Grottoes's warmest month. For most parts of July, the heat index is evaluated at a hot 93.2°F (34°C). Weather in July »Weather in August
The last month of the summer, August, is another warm month in Grottoes, Virginia, with temperature in the range of an average low of 60.6°F (15.9°C) and an average high of 82.9°F (28.3°C). August's arrival shows an average high-temperature of a still moderately hot 82.9°F (28.3°C), hardly different from the previous month. Weather in August »Weather in September
September, the first month of the autumn in Grottoes, is also a moderately hot month, with an average temperature fluctuating between 55.6°F (13.1°C) and 76.1°F (24.5°C). A moderate decline in average high-temperatures is noted in September, moving from 82.9°F (28.3°C) in August to a still moderately hot 76.1°F (24.5°C). Weather in September »Weather in October
October, like September, in Grottoes, Virginia, is another refreshing autumn month, with an average temperature fluctuating between 64.4°F (18°C) and 45.3°F (7.4°C). Grottoes's transition into October involves a shift in temperature, receding from a moderately hot 76.1°F (24.5°C) in September to a refreshing 64.4°F (18°C). Weather in October »Weather in November
The last month of the autumn, November, is another cool month in Grottoes, Virginia, with an average temperature varying between 52.5°F (11.4°C) and 34.3°F (1.3°C). The decrease of average high-temperatures is mild in November, with a decline from a comfortable 64.4°F (18°C) in October to a cool 52.5°F (11.4°C). Weather in November »Weather in December
December, the first month of the winter in Grottoes, is still a chilly month, with temperature in the range of an average low of 30°F (-1.1°C) and an average high of 44.1°F (6.7°C). December's onset introduces a mild reduction in the average high-temperature, from a cool 52.5°F (11.4°C) in November to a frosty 44.1°F (6.7°C). Weather in December »Updated: Jul 27, 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
The coldest time of the year is January, with temperatures averaging a high of 39°F (3.9°C) and a low of 24.3°F (-4.3°C).
The months with the lowest humidity are January, June and July, with an average relative humidity of 74%.
The month with the least rainfall is January, when the rain falls for 9.9 days and typically collects 1.89" (48mm) of precipitation.
Throughout the year, there are 164.3 rainfall days, and 30.08" (764mm) of precipitation is accumulated.
January through May, October through December are months with snowfall.
Throughout the year, in Grottoes, there are 21.7 snowfall days, and 16.69" (424mm) of snow is accumulated.
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.
March is the month with the most snowfall. Snow falls for 4.8 days and accumulates 4.53" (115mm) 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.
The months with the highest humidity are May, September and October, with an average relative humidity of 78%.
The month with the most rainfall is May, when the rain falls for 18.8 days and typically aggregates up to 3.27" (83mm) of precipitation.
The months with the highest UV index in Grottoes are May through July, with an average maximum UV index of 6.
June through September are months without snowfall.
The month with the longest days in Grottoes is June, with an average of 14h and 48min of daylight.
Grottoes experiences its highest temperatures in July, with an average peak of 84.6°F (29.2°C) and a low of 62.2°F (16.8°C).
With an average of 10.6h of sunshine, July has the most sunshine of the year.
With an average of 9h and 36min of daylight, December has the shortest days of the year in Grottoes.
December has the least sunshine of the year in Grottoes, with an average of 5.3h of sunshine.
Average temperature
Grottoes, VA
The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (39°F).
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure
Grottoes, VA
- Average pressure in January:
30.12"Hg - Average pressure in February:
30.09"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.99"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.96"Hg
- Average pressure in July:
29.99"Hg - Average pressure in August:
30.01"Hg - Average pressure in September:
30.06"Hg - Average pressure in October:
30.05"Hg - Average pressure in November:
30.15"Hg - Average pressure in December:
30.12"Hg
The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed
Grottoes, VA
- Average wind speed in January:
6.3mph - Average wind speed in February:
6.6mph - Average wind speed in March:
6.5mph - Average wind speed in April:
6.6mph - Average wind speed in May:
5.5mph - Average wind speed in June:
5mph
- Average wind speed in July:
4.3mph - Average wind speed in August:
4.2mph - Average wind speed in September:
4.5mph - Average wind speed in October:
5.3mph - Average wind speed in November:
5.5mph - Average wind speed in December:
5.5mph
The windiest months (with the highest average wind speed) are February and April (6.6mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity
Grottoes, VA
The months with the highest relative humidity are May, September and October (78%).
The months with the lowest relative humidity are January, June and July (74%).
Average rainfall
Grottoes, VA
- Average rainfall in January:
1.89" - Average rainfall in February:
2.01" - Average rainfall in March:
2.32" - Average rainfall in April:
3.19" - Average rainfall in May:
3.27" - Average rainfall in June:
2.72"
The wettest month (with the highest rainfall) is May (3.27").
The driest month (with the least rainfall) is January (1.89").
Average rainfall days
Grottoes, VA
- Average rainfall days in January:
9.9 days - Average rainfall days in February:
11.7 days - Average rainfall days in March:
14.1 days - Average rainfall days in April:
15.2 days - Average rainfall days in May:
18.8 days - Average rainfall days in June:
15.8 days
- Average rainfall days in July:
17.4 days - Average rainfall days in August:
17.3 days - Average rainfall days in September:
14.1 days - Average rainfall days in October:
11.8 days - Average rainfall days in November:
8.6 days - Average rainfall days in December:
9.6 days
The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is November (8.6 days).
Average snowfall
Grottoes, VA
- Average snowfall in January:
3.66" - Average snowfall in February:
4.09" - Average snowfall in March:
4.53" - Average snowfall in April:
0.55" - Average snowfall in May:
0.08" - Average snowfall in June:
0"
The month with the highest snowfall is March (4.53").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Grottoes, VA
- Average snowfall days in January:
6 days - Average snowfall days in February:
6.3 days - Average snowfall days in March:
4.8 days - Average snowfall days in April:
0.4 days - Average snowfall days in May:
0.1 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:
0.3 days - Average snowfall days in November:
0.5 days - Average snowfall days in December:
3.3 days
The month with the highest number of snowfall days is February (6.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Grottoes, VA
- 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 18min - Average daylight in June:
14h and 48min
- 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 6min - Average daylight in December:
9h and 36min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January:
5h and 24min - Average sunshine in February:
5h and 42min - Average sunshine in March:
6h and 48min - Average sunshine in April:
9h and 12min - Average sunshine in May:
9h and 12min - Average sunshine in June:
10h and 30min
- Average sunshine in July:
10h and 36min - Average sunshine in August:
10h and 12min - Average sunshine in September:
8h and 36min - Average sunshine in October:
5h and 54min - Average sunshine in November:
6h and 6min - Average sunshine in December:
5h and 18min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days
Grottoes, VA
- Average sunshine days in January:
17.2 days - Average sunshine days in February:
12.8 days - Average sunshine days in March:
13.3 days - Average sunshine days in April:
12.3 days - Average sunshine days in May:
10.8 days - Average sunshine days in June:
12.6 days
- Average sunshine days in July:
10.9 days - Average sunshine days in August:
11.7 days - Average sunshine days in September:
13.8 days - Average sunshine days in October:
17.5 days - Average sunshine days in November:
19.1 days - Average sunshine days in December:
18.4 days
The month with the most sunshine days is November (19.1 days).
The month with the least sunshine days is May (10.8 days).
Average UV index
Grottoes, VA
The months with the highest UV index are May, June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Grottoes, VA
The month with the most cloud cover is March (Cloud cover 46).
The months with the least cloud cover are June and July (Cloud cover 31).
Average visibility
Grottoes, VA
The months with the highest visibility are April, June, July, August and November (6mi).
The months with the lowest visibility are January, February, March, May, September, October and December (5mi).
