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Frederick, MD

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A stone bridge over the calm Carroll Creek in the Carroll Creek Linear Park in Frederick, Maryland
A stone bridge over the calm Carroll Creek in the Carroll Creek Linear Park in Frederick, Maryland

The climate of Frederick

Frederick, Maryland, USA, experiences a Humid Subtropical climate, categorized as Cfa per the Köppen climate classification. This designation signifies no dry season, with moisture present year-round, distributed across all months. Located strategically on the east coast of the United States, Frederick's climate is characterized by considerable seasonality as temperatures fluctuate between 23.7°F (-4.6°C) in the coldest months and 85.6°F (29.8°C) at the height of summer.

The annual procession of seasons in Frederick brings with it a distinctive pattern in weather parameters. The period from December to February typically holds a cold grip on the city, with temperatures as low as 23.7°F (-4.6°C), climbing gradually from 37.6°F (3.1°C) in December, through 41.9°F (5.5°C) in January to 50.4°F (10.2°C) in March. In contrast, the height of summer in July records a peak temperature of 85.6°F (29.8°C).

In terms of precipitation, the city experiences a rather uniform rainfall distribution throughout the year, with a range from a low of 1.85" (47mm) in December to a high of 3.54" (90mm) in May. Similarly, relative humidity remains fairly constant, oscillating between 74% and 79%. Maximum recorded snowfall is observed in January, measuring at 3.66" (93mm), falling to nearly zero inches between May and November.

Frederick's daylight hours expand from a minimal 9.8hrs in December to an ample 14.9hrs in June. The sunshine hours follow suit, reaching their zenith at 10.6hrs in July from a nadir of 4.8hrs during January and February. As the seasons turn, wind speeds show modest variations, with annual values extending from 4.7mph (7.6km/h) to 7.8mph (12.6km/h).

The best time to visit Frederick

Optimal visiting periods often hinge on the purpose of visit, whether for sightseeing or taking part in outdoor activities. For those aiming to capitalize on welcoming temperatures and outstanding outdoor ambiance, the period between May and September presents an appeasing choice. During these months, temperatures oscillate from 72.7°F (22.6°C) to 85.6°F (29.8°C), ideal for exploring the town's striking historic architecture, idyllic parks, and bustling local markets.

The worst time to visit Frederick

Weather suitability for travel is subjective; a time dubbed unsuitable for some might be the perfect choice for others. However, considering common travel preferences, the months of January and February might prove challenging for sightseers due to freezing temperatures ranging from 23.7°F (-4.6°C) to 33.4°F (0.8°C) and reduced daylight hours barely reaching above 10.7hrs.

Spring weather in Frederick

Frederick's spring, spanning from March to May, introduces a gradual warming trend. Temperatures start from a lower threshold of 33.4°F (0.8°C) in March, eventually reaching a pleasant 52.7°F (11.5°C) by the close of May. Alongside the rising temperatures, accumulated rainfall also increases from 2.17" (55mm) in March to 3.54" (90mm) in May, nourishing the city's verdant landscapes.

Summer weather in Frederick

With average temperatures oscillating from 60.4°F (15.8°C) to 85.6°F (29.8°C), Frederick’s summer runs from June until August. The long, warm days often stretch up to nearly 15 daylight hours, peaking during June. These sun-filled days make summer attractive for outdoor activities despite sporadic showers that can reach up to 3.43" (87mm) in August.

Autumn weather in Frederick

Autumn in Frederick is characterized by a gradual drop in weather parameters from September to November. The fall season heralds a decrease in temperature from a warm 76.3°F (24.6°C) in September to a milder 52.2°F (11.2°C) in November, painting the local foliage in vibrant Autumn colors. While the daylight hours decrease progressively from 12.4 hours in September to 10 hours in November, the amount of rainfall remains fairly steady, rounding off at 2.05" (52mm).

Winter weather in Frederick

Winter descends upon Frederick in December, extending until February, during which time the city experiences its lowest temperatures, dropping to a chilly 23.7°F (-4.6°C) in January. The crimp in temperatures coincides with a reduction in daylight, tapering to a minimum average of 9.4 hours in December. Despite the reduced temperatures, the city's snowfall is notably restrained, averaging 3.66" (93mm) in December and tapering to 2.72" (69mm) by February.

Weather in January

The chilling month of January in Frederick, Maryland sees the lowest temperatures of the year. While frost and snowfall mark the month, the temperature can drop to as low as 23.7°F (-4.6°C). The huddled weather steers a surge in indoor activities cementing the ambiance of a winter retreat. Weather in January »

Weather in February

As winter leaps into February in Frederick, Maryland, the average high temperatures show a slight increase; however, the weather remains bitter and snowy. The lowest temperature noted for February steps up slightly from January to 26.2°F (-3.2°C). Weather in February »

Weather in March

Moving into March, Frederick begins to release the tight grip of winter, marking the commencement of the Spring season. The weather undergoes a noticeable transition with increased high temperatures, a relatively warmer weather pattern than the preceding months. Weather in March »

Weather in April

April is a transitional month in Frederick, Maryland, characterized by warmer temperatures, blooming flowers, and more sunshine hours. The most significant change is the absence of snow, hitting a mere 0.04" (1mm) compared to March. Weather in April »

Weather in May

The month of May sees a full bloom of Spring and a gentle whisper into Summer in Frederick. Having left the cooler temperatures of April behind, the people of Frederick now revel in the luxury of balmy weather patterns. The city witnesses its maximum rainfall, measuring up to an average of 3.54" (90mm). Weather in May »

Weather in June

June in Frederick, Maryland, marks the official onset of a warm, delightful summer. A dramatic increase in average high temperatures establishes a stark contrast with the cooler temperatures of May. Coupled with a potential 14.9 hours of daylight, June could be the best month for outdoor pursuits. Weather in June »

Weather in July

July is the peak of Summer in Frederick, with temperatures rising to an average high of 85.6°F (29.8°C), the highest of the year. This month is hot, yet balanced with seemingly longer daylight hours, facilitating summer activities till late. Weather in July »

Weather in August

The heat continues to swell in August, with only a slight dip in temperature from its July peak. Nevertheless, 83.5°F (28.6°C) is the threshold in Frederick, making August the second warmest month of the year. Still within the grip of summer's splendor, outdoor activities continue to thrive, facilitated by the extended daylight hours. Weather in August »

Weather in September

September marks the beginning of the fall season in Frederick, Maryland, when the leaves start to change color and daylight begins to shorten. The temperatures start to withdraw from the summer swelter, settling at a comfortable average high of 76.3°F (24.6°C). Weather in September »

Weather in October

As Frederick steps into October, autumn unveils its colorful canvas, well complemented by mellow weather and steady rain. While temperatures continue to drop, the transition is gentler than the preceding month, ensuring comfortably cool days. Weather in October »

Weather in November

November in Frederick ushers the onset of winter while bidding adieu to autumn. The sharp decrease in temperature from the previous month, down to 52.2°F (11.2°C), makes November noticeably colder. The fall foliage starts to fade, and the landscape begins to brace for the winter chill. Weather in November »

Weather in December

December in Frederick, Maryland, is synonymous with the heart of winter. Despite being the last month of the year, it is not the coldest, bearing an average high temperature slightly above January at 43.2°F (6.2°C). The mercury takes a dip, accompanying the arrival of snow and turning the city into a winter wonderland. Weather in December »
Updated: Aug 28, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the coldest?

In Frederick, January is known for its average lowest temperatures, reaching a high of 37.6°F (3.1°C) and a low of 23.7°F (-4.6°C).

What is the driest month?

January is the month with the least rainfall. Rain falls for 8.7 days and accumulates 1.85" (47mm) of precipitation.

How much does it rain?

In Frederick, Maryland, during the entire year, the rain falls for 159.7 days and collects up to 30.04" (763mm) of precipitation.

When does it snow in Frederick?

Months with snowfall are January through May, November and December.

When does it snow the most?

January is the month with the most snowfall. Snow falls for 6.3 days and accumulates 3.66" (93mm) of snow.

How many days does it snow?

In Frederick, during the entire year, snow falls for 19.8 days and aggregates up to 11.46" (291mm) of snow.

What are the months with the least sunshine?

January and February, with an average of 4.8h of sunshine, are months with the least sunshine.

When is the lowest UV index?

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

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 are the most humid months?

May, October and December, with an average relative humidity of 79%, are most humid months.

What is the rainiest month?

May is the month with the most rainfall. Rain falls for 18.6 days and accumulates 3.54" (90mm) 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?

June through October are months without snowfall.

When are the longest days?

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

What are the warmest months?

Frederick's July weather reaches an average high of 85.6°F (29.8°C) and an average low of 64.9°F (18.3°C), making it the warmest month.

What is the least humid month?

With an average relative humidity of 74%, July is the least humid month.

What month has the most sunshine?

July has the most sunshine of the year, with an average of 10.6h of sunshine.

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.
Today
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Long-term
YearJFMAMJJASOND

Average temperature
Frederick, MD

Average temperature - Frederick, MD

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (37.6°F).

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (23.7°F).

Average pressure
Frederick, MD

Average pressure - Frederick, 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
Frederick, MD

Average wind speed - Frederick, MD

The windiest month (with the highest average wind speed) is March (7.8mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).

Average humidity
Frederick, MD

Average humidity - Frederick, MD

The months with the highest relative humidity are May, October and December (79%).
The month with the lowest relative humidity is July (74%).

Average rainfall
Frederick, MD

Average rainfall - Frederick, MD

The wettest month (with the highest rainfall) is May (3.54").
The driest month (with the least rainfall) is January (1.85").

Average rainfall days
Frederick, MD

Average rainfall days - Frederick, MD

The month with the highest number of rainy days is May (18.6 days).
The month with the least rainy days is January (8.7 days).

Average snowfall
Frederick, MD

Average snowfall - Frederick, MD

The month with the highest snowfall is January (3.66").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days
Frederick, MD

Average snowfall days - Frederick, MD

The months with the highest number of snowfall days are January and February (6.3 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

Average daylight / Average sunshine
Frederick, MD

Average daylight / Average sunshine - Frederick, 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 36min).
The months with the least sunshine are January and February (Average sunshine: 4h and 48min).

Average sunshine days
Frederick, MD

Average sunshine days - Frederick, MD

The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is May (11.1 days).

Average UV index
Frederick, MD

Average UV index - Frederick, 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
Frederick, MD

Average cloud cover - Frederick, MD

The months with the most cloud cover are January, February and March (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 32).

Average visibility
Frederick, MD

Average visibility - Frederick, MD

The months with the highest visibility are February, March, April, June, July, August, November and December (6mi).
The months with the lowest visibility are January, May, September and October (5mi).

Frederick, Maryland, USA

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