Climate and monthly weather forecast
Thurmont, MD

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The climate of Thurmont

Embracing the geographical position in the Humid Subtropical zone of the Köppen climate classification, Thurmont, Maryland, USA, thrives under a predominating Cfa climate regime. Specifically, it manifests distinct seasonal changes with year-round precipitation, coupled with long, hot summers and cold winters. Throughout the year, temperature varies from a low of 23.4°F (-4.8°C) in January to a high of 84.7°F (29.3°C) come July. Relative humidity remains relatively constant throughout the year varying from 75% in April and July to a high of 80% in October.

Annual precipitation in Thurmont is distinguished by uniform distribution throughout the year, ranging from a low of 2.2in in February to a high of 3.5in in May. This consistent moisture, coupled with temperatures that support the evaporation process, underpins the town’s high relative humidity. It's noteworthy that snowfall is predominant through January to March and usually almost absent from April to October with a range of 4.53in in January to a slightly noticeable 0.16in in May.

Sunshine hours and daylight hours, which are interconnected, peak in mid-year, June, with 14.9 hours and decrease gradually towards the year-end to a low of 9.4 hours by December. Average visibility in Thurmont is mostly steady at 5 miles, except in the months of April, June, and November when it reaches 6 miles. Taking note of the wind speeds, the range from 8mph (12.9km/h) in January to 4.7mph (7.6km/h) in July and August shows a moderate wind climate throughout the year. Thurmont’s cloud coverage is fairly constant year-round, rarely dropping below 32% in July or exceeding 50% in February.

The best time to visit Thurmont

Considering the balance between temperature, humidity, and precipitation, the best time to visit Thurmont would be during late Spring, between May and June. During this period, the temperature straddles an agreeable range from 61.9°F (16.6°C) to 79.7°F (26.5°C). At the same time, the town enjoys maximum daylight hours reaching up to 14.4 hours in May and just a small decrease to 14.9 hours in June, which allows ample time for outdoor activities.

The worst time to visit Thurmont

Traveling to Thurmont would be challenging between December and February due to the freezing winter conditions. The temperature sinks to a range from 23.4°F (-4.8°C) to 40.6°F (4.8°C). This period also records high snowfall levels that reach up to 4.53in in January, coupled with reduced daylight hours of 9.4 hours in December, that might limit outdoor activities.

Spring weather in Thurmont

Spring in Thurmont spans from March to May. This period witnesses a remarkable uplift in the temperature scale from a 49.6°F (9.8°C) average in March to a more comfortable 71.8°F (22.1°C) in May. Rainfall and the number of days with rain are highest in this season, reaching a peak of 3.5in over 18.3 days in May. April is noted for an increase in daylight hours to 13.3, a trend that continues in May with 14.4 hours.

Summer weather in Thurmont

Summer sets in from June to August with July boasting the highest temperatures of the year, peaking at 84.7°F (29.3°C). There is a significant drop in the number of snowfall days to none. Rainfall stays moderate with readings from 2.48in in June to 3.27in in July. Sunshine extends for the year's maximum of 10.5 hours in July.

Autumn weather in Thurmont

Autumn in Thurmont commences in September and concludes in November. A steady decrease in temperature is observed during this period from 75.4°F (24.1°C) in September to 50.9°F (10.5°C) by November. Rainfall is moderately high as well, marking 2.32in in September and slightly increasing to 2.48in by November. The amount of daylight declines from 12.4 hours in September to about 10 hours by November.

Winter weather in Thurmont

Winter in Thurmont stretches from December to February. During this time, the city experiences the coldest temperatures of the year falling from 42.1°F (5.6°C) in December to 23.4°F (-4.8°C) in January. The frequency of snowfall is highest in this season, registering up to 4.53in in January. The amount of daylight is at its lowest in December, recording only 9.4 hours.

Weather in January

The first month of the year starts with chillier temperatures in Thurmont, Maryland, but it gradually surpasses December. January is the second coldest month of the year, but the lows of 23.4°F (-4.8°C) and highs of 36.7°F (2.6°C) counterbalance the overall atmosphere. Weather in January »

Weather in February

February's weather in Thurmont, Maryland exhibits a noticeable change, with slightly milder temperatures than January's frigid atmosphere. These temperatures are precursors to the springtime transition. They signal the shift towards warmer days, although winter conditions still persist. Weather in February »

Weather in March

Weather in Thurmont, Maryland can be quite unpredictable in March, with spring vying against the remnants of winter. Nonetheless, it has higher temperatures ranging from 32.5°F (0.3°C) to 49.6°F (9.8°C) than the chilling atmosphere of February. Weather in March »

Weather in April

April brings an evident change in Thurmont, Maryland's weather, offering respite from the winter chill. This month showcases an abundance of sunlight, reaching 8.4 hours a day, giving a warm feeling throughout the day. The involvement of vigorous cold fronts is less significant, while light rain in the evenings becomes common. Weather in April »

Weather in May

May in Thurmont, Maryland is the precursor to the onset of summer, with warmer temperatures ruling the day. The rain is more frequent, reaching 3.5" (89mm), and is evenly distributed throughout the month. Colorful flowers and flourishing vegetation become the main features of the landscape, showcasing May's vibrant weather. Weather in May »

Weather in June

Thurmont, Maryland's weather in June is characterized by the beginning of the warmest period of the year, marking the start of summer. However, this month hosts optimal weather conditions with temperatures suitable for outdoor excursions. Weather in June »

Weather in July

In Thurmont, Maryland, July stands out as the hottest month with temperatures soaring to a high of 84.7°F (29.3°C). Nevertheless, this month's weather is balanced with relative humidity of 75%. A mix of sunshine, warm temperatures, and periodic rainfall makes for a typical summer day in Thurmont. Weather in July »

Weather in August

Thurmont, Maryland's weather in August is typical of the late summer season. With a slight decline in temperature from the peak heat of July, the atmosphere turns more agreeable. Afternoon showers continue to be a commonplace event, providing a refreshing break from the sun-drenched days. Weather in August »

Weather in September

September's weather in Thurmont, Maryland introduces cooler temperatures, signaling the arrival of the fall season. With an average high temperature of 75.4°F (24.1°C), the region experiences a pleasant atmosphere. Occasional rain showers compliments the crisp air, bringing respite from the summer heat. Weather in September »

Weather in October

October in Thurmont, Maryland is associated with weather that exhibits the heart of autumn. The climate exhibits a dramatic drop in temperature, marking a stark contrast to the summer's warmth. Rich blends of yellows, oranges, and reds fill the landscapes, signifying the beauty of the season. Weather in October »

Weather in November

Thurmont, Maryland's weather in November indicates the approaching winter with the occurrence of the first few frosts. Despite the steady fall of temperatures from the warmth of October, November still manages to provide some sunny afternoons. Weather in November »

Weather in December

December's weather in Thurmont, Maryland is emblematic of a typical winter season. It records the lowest temperatures of the year, with an average minimum temperature of 30.2°F (-1°C). Snow becomes a frequent visitor, turning the landscapes into a winter wonderland. Weather in December »
Updated: Jul 5, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the coldest?

January, with average temperatures reaching a high of 36.7°F (2.6°C) and a low of 23.4°F (-4.8°C), is the coldest month.

How much does it rain?

In Thurmont, during the entire year, the rain falls for 164.1 days and collects up to 31.97" (812mm) of precipitation.

When does it snow?

Months with snowfall are January through May, October through December.

When does it snow the most?

The month with the most snowfall is January, when snow falls for 8.3 days and typically aggregates up to 4.53" (115mm) of snow.

How many days does it snow?

In Thurmont, during the entire year, snow falls for 26.7 days and aggregates up to 14.13" (359mm) of snow.

What is the month with the lowest UV index?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the driest month in Thurmont?

February is the month with the least rainfall. Rain falls for 10 days and accumulates 2.2" (56mm) of precipitation.

What is the month with the least sunshine?

February has the least sunshine of the year, with an average of 4.6h of sunshine.

When is Daylight Saving Time (DST)?

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.

What is the least humid month in Thurmont?

The months with the lowest humidity are April and July, with an average relative humidity of 75%.

What is the wettest month?

The month with the most rainfall in Thurmont is May, when the rain falls for 18.3 days and typically aggregates up to 3.5" (89mm) of precipitation.

When is the highest UV index?

The months with the highest UV index are May through August, with an average maximum UV index of 6.

When it does not snow?

In Thurmont, snow does not fall in June through September.

When are the longest days?

With an average of 14h and 54min of daylight, June has the longest days of the year.

What month is the hottest?

July, known for its average high temperature of 84.7°F (29.3°C) and an average low temperature of 64°F (17.8°C), is the warmest month.

What month has the most sunshine?

July has the most sunshine of the year, with an average of 10.5h of sunshine.

What is the most humid month in Thurmont?

The most humid month is October, with an average relative humidity of 80%.

What is the month with the shortest days?

With an average of 9h and 24min of daylight, December has the shortest days of the year.
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Average temperature
Thurmont, MD

Average temperature - Thurmont, MD

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (36.7°F).

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).

Average pressure
Thurmont, MD

Average pressure - Thurmont, MD

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
Thurmont, MD

Average wind speed - Thurmont, MD

The windiest month (with the highest average wind speed) is January (8mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).

Average humidity
Thurmont, MD

Average humidity - Thurmont, MD

The month with the highest relative humidity is October (80%).
The months with the lowest relative humidity are April and July (75%).

Average rainfall
Thurmont, MD

Average rainfall - Thurmont, MD

The wettest month (with the highest rainfall) is May (3.5").
The driest month (with the least rainfall) is February (2.2").

Average rainfall days
Thurmont, MD

Average rainfall days - Thurmont, MD

The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is January (8.7 days).

Average snowfall
Thurmont, MD

Average snowfall - Thurmont, MD

The month with the highest snowfall is January (4.53").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days
Thurmont, MD

Average snowfall days - Thurmont, MD

The month with the highest number of snowfall days is January (8.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine
Thurmont, MD

Average daylight / Average sunshine - Thurmont, MD

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 24min).

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

Average sunshine days
Thurmont, MD

Average sunshine days - Thurmont, MD

The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is May (11.2 days).

Average UV index
Thurmont, MD

Average UV index - Thurmont, 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, February, November and December (UV index 2).

Average cloud cover
Thurmont, MD

Average cloud cover - Thurmont, MD

The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 32).

Average visibility
Thurmont, MD

Average visibility - Thurmont, MD

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).

Thurmont, Maryland, USA

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