Climate and monthly weather forecastOlney, MD
Climate and monthly weather forecast
Weather in January
January, the same as December, is an icy winter month in Olney, Maryland, with an average temperature ranging between max 39°F (3.9°C) and min 26.2°F (-3.2°C). In Olney, the lowest temperatures are generally noted in January, averaging a high of 39°F (3.9°C) and a low of 26.2°F (-3.2°C). Weather in January »Weather in February
February, the last month of the winter in Olney, is a chilly month, with temperature in the range of an average low of 28.8°F (-1.8°C) and an average high of 43.9°F (6.6°C). As February unfolds, the average high-temperature reaches a chilly 43.9°F (6.6°C), hinting at a slight fluctuation from the previous month. Weather in February »Weather in March
The first month of the spring, March, is a cool month in Olney, Maryland, with an average temperature varying between 36.1°F (2.3°C) and 52°F (11.1°C). As February gives way to March, the average high-temperature displays a slight ascent, adjusting from a chilly 43.9°F (6.6°C) to a cool 52°F (11.1°C). Weather in March »Weather in April
April in Olney, Maryland, is a comfortable spring month, with temperature in the range of an average high of 64.2°F (17.9°C) and an average low of 46°F (7.8°C). The start of April is characterized by an increase in the average high-temperature, transitioning from a fresh 52°F (11.1°C) in March to a refreshing 64.2°F (17.9°C). Weather in April »Weather in May
May, the last month of the spring in Olney, is a warm month, with an average temperature ranging between min 55.8°F (13.2°C) and max 73.9°F (23.3°C). An escalation in the average high-temperature is seen with the onset of May, moving from a comfortable 64.2°F (17.9°C) in April to a moderately hot 73.9°F (23.3°C). Weather in May »Weather in June
The first month of the summer, June, is also a moderately hot month in Olney, Maryland, with an average temperature fluctuating between 81.7°F (27.6°C) and 63.9°F (17.7°C). The coming of June brings a minor shift in Olney's weather, with average high-temperatures adjusting from May's warm 73.9°F (23.3°C) to a still moderately hot 81.7°F (27.6°C). Weather in June »Weather in July
July in Olney, Maryland, is a tropical summer month, with an average temperature fluctuating between 68.7°F (20.4°C) and 87.3°F (30.7°C). July is Olney's warmest month, registering average high temperatures of 87.3°F (30.7°C) and lows of 68.7°F (20.4°C). In July, the average heat index is estimated at a sweltering 98.6°F (37°C). Weather in July »Weather in August
The last month of the summer, August, is also a moderately hot month in Olney, Maryland, with an average temperature ranging between max 84.9°F (29.4°C) and min 67.6°F (19.8°C). Olney experiences an average high-temperature of a moderately hot 84.9°F (29.4°C) in August, subtly different from July's 87.3°F (30.7°C). Weather in August »Weather in September
September, the first month of the autumn in Olney, is also a moderately hot month, with an average temperature fluctuating between 78.1°F (25.6°C) and 60.8°F (16°C). The start of September involves a subtle temperature drop, shifting from a warm 84.9°F (29.4°C) in August to a still moderately hot 78.1°F (25.6°C). Weather in September »Weather in October
October, the same as September, is another comfortable autumn month in Olney, Maryland, with temperature in the range of an average high of 65.8°F (18.8°C) and an average low of 50.2°F (10.1°C). Olney's October weather shows a moderate shift in high-temperatures, falling from September's warm 78.1°F (25.6°C) to a refreshing 65.8°F (18.8°C). Weather in October »Weather in November
November, the last month of the autumn in Olney, is another cool month, with an average temperature ranging between max 53.4°F (11.9°C) and min 38.8°F (3.8°C). November involves a decrease in temperature, down from a comfortable 65.8°F (18.8°C) in October to a fresh 53.4°F (11.9°C). Weather in November »Weather in December
December, the first month of the winter in Olney, is still a chilly month, with temperature in the range of an average high of 45.3°F (7.4°C) and an average low of 32.9°F (0.5°C). The transition into December is accompanied by a slight temperature decrease, with the average high-temperature shifting from a fresh 53.4°F (11.9°C) in November to a frosty 45.3°F (7.4°C). Weather in December »Updated: Aug 18, 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
January, noted for its average high-temperature of 39°F (3.9°C) and an average low-temperature of 26.2°F (-3.2°C), is considered the coldest month.
January is the month with the least rainfall. Rain falls for 9.3 days and accumulates 2.17" (55mm) of precipitation.
Throughout the year, there are 160.9 rainfall days, and 32.99" (838mm) of precipitation is accumulated.
January through April, November and December are months with snowfall.
The months with the most snowfall are January and March, with an average 3.03" (77mm) of accumulated snow.
In Olney, during the entire year, snow falls for 17.1 days and aggregates up to 10.2" (259mm) of snow.
The months with the lowest UV index are January, November and December, with an average maximum UV index of 2.
The month with the least sunshine is February, with an average of 5h of sunshine.
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.
May, October and December, with an average relative humidity of 76%, are most humid months.
May through October are months without snowfall.
The months with the highest UV index are May through August, with an average maximum UV index of 6.
With an average of 14h and 54min of daylight, June has the longest days of the year.
Olney reaches its average highest temperatures in July, measuring 87.3°F (30.7°C) at the peak and 68.7°F (20.4°C) at the lowest.
July is the least humid month, with an average relative humidity of 70%.
With an average of 10.8h of sunshine, July has the most sunshine of the year.
The month with the most rainfall is August, when the rain falls for 17.1 days and typically aggregates up to 4.13" (105mm) of precipitation.
December has the shortest days of the year, with an average of 9h and 30min of daylight.
Average temperature
Olney, MD
The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (39°F).
The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).
Average pressure
Olney, MD
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.07"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:
29.95"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.99"Hg - Average pressure in September:
30.05"Hg - Average pressure in October:
30.04"Hg - Average pressure in November:
30.14"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed
Olney, MD
- Average wind speed in January:
7.8mph - Average wind speed in February:
7.9mph - Average wind speed in March:
8.1mph - Average wind speed in April:
8mph - Average wind speed in May:
6.5mph - Average wind speed in June:
6mph
- Average wind speed in July:
5.2mph - Average wind speed in August:
5.1mph - Average wind speed in September:
5.7mph - Average wind speed in October:
6.6mph - Average wind speed in November:
7mph - Average wind speed in December:
7.1mph
The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity
Olney, MD
The months with the highest relative humidity are May, October and December (76%).
The month with the lowest relative humidity is July (70%).
Average rainfall
Olney, MD
- Average rainfall in January:
2.17" - Average rainfall in February:
2.2" - Average rainfall in March:
2.44" - Average rainfall in April:
2.87" - Average rainfall in May:
3.23" - Average rainfall in June:
2.68"
- Average rainfall in July:
3.23" - Average rainfall in August:
4.13" - Average rainfall in September:
2.24" - Average rainfall in October:
2.6" - Average rainfall in November:
2.44" - Average rainfall in December:
2.76"
The wettest month (with the highest rainfall) is August (4.13").
The driest month (with the least rainfall) is January (2.17").
Average rainfall days
Olney, MD
- Average rainfall days in January:
9.3 days - Average rainfall days in February:
9.5 days - Average rainfall days in March:
13.8 days - Average rainfall days in April:
16.3 days - Average rainfall days in May:
17.8 days - Average rainfall days in June:
15.6 days
- Average rainfall days in July:
17.5 days - Average rainfall days in August:
17.1 days - Average rainfall days in September:
12.5 days - Average rainfall days in October:
12.5 days - Average rainfall days in November:
8.8 days - Average rainfall days in December:
10.2 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is November (8.8 days).
Average snowfall
Olney, MD
The months with the highest snowfall are January and March (3.03").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Olney, MD
- Average snowfall days in January:
5.1 days - Average snowfall days in February:
5.1 days - Average snowfall days in March:
3.3 days - Average snowfall days in April:
0.2 days - Average snowfall days in May:
0 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 days - Average snowfall days in November:
0.5 days - Average snowfall days in December:
2.9 days
The months with the highest number of snowfall days are January and February (5.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Olney, MD
- Average daylight in January:
9h and 48min - Average daylight in February:
10h and 48min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 18min - Average daylight in June:
14h and 54min
- Average daylight in July:
14h and 36min - Average daylight in August:
13h and 42min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 30min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in January:
5h and 6min - Average sunshine in February:
5h and 0min - Average sunshine in March:
6h and 48min - Average sunshine in April:
8h and 48min - Average sunshine in May:
8h and 48min - Average sunshine in June:
10h and 12min
- Average sunshine in July:
10h and 48min - Average sunshine in August:
10h and 12min - Average sunshine in September:
8h and 54min - Average sunshine in October:
5h and 36min - Average sunshine in November:
5h and 42min - Average sunshine in December:
5h and 6min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).
Average sunshine days
Olney, MD
- Average sunshine days in January:
18.1 days - Average sunshine days in February:
14.6 days - Average sunshine days in March:
14 days - Average sunshine days in April:
11.9 days - Average sunshine days in May:
11 days - Average sunshine days in June:
13 days
- Average sunshine days in July:
11 days - Average sunshine days in August:
12.3 days - Average sunshine days in September:
15.6 days - Average sunshine days in October:
16.5 days - Average sunshine days in November:
19.4 days - Average sunshine days in December:
17.5 days
The month with the most sunshine days is November (19.4 days).
The months with the least sunshine days are May and July (11 days).
Average UV index
Olney, MD
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, November and December (UV index 2).
Average cloud cover
Olney, MD
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility
Olney, MD
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
