Climate and monthly weather forecastMcHenry, MD
Climate and monthly weather forecast
The climate of McHenry
McHenry, Maryland in the United States belongs primarily to the Köppen climate classification Cfb, characterized as a marine west coast climate with warm summers. Located in the northern hemisphere and having marine influence, this city presents a distinct cycle of weather throughout the year.The diversity of weather patterns is apparent from monthly variations in climatological parameters. Fluctuations in high temperatures occur from a modest 32°F (0°C) in January to a peak of 79.9°F (26.6°C) in July. Correspondingly, low temperatures also change from a chilly 19.6°F (-6.9°C) in January to a relatively warm 58.8°F (14.9°C) in July. These differences indicate McHenry’s varied climate, with chilly winters and warm, milder summers.
Rainfall is another substantial aspect of McHenry's climate. February sees the lowest amount of rainfall at 2.09" (53mm), while May brings the highest rainfall at 3.43" (87mm). The span of rainfall days extends from as low as 7.3 in February to as high as 20.9 in May. The changing monthly rainfall patterns underline McHenry's wet weather conditions, owing to its unique position on the coast.
The best time to visit McHenry
The best period to visit McHenry would be during the late spring to early summer, from May to June. Not only is the city bathed in a comfortable high temperature between 68.5°F (20.3°C) and 75.6°F (24.2°C), but daylight is also extended, lasting 14.4 hours in May and 14.9 hours in June. This combination of temperate weather conditions and longer daylight periods augments the appeal of outdoor activities during these months. Furthermore, in May and June, the city will be dappled with a sunlight duration of 8.4 hours and 9.3 hours, respectively.The worst time to visit McHenry
It would be less opportune to explore McHenry in winter months, between December and February. The average lowest temperature drops to 19.6°F (-6.9°C) in January, compounded by short daylight hours of 9.8 hours in December and 10.7 hours in January. Moreover, the city experiences the highest snowfall during these months, particularly in December and January, with respective measurements of 5.24" (133mm) and 5.16" (131mm).Spring weather in McHenry
McHenry welcomes spring with average high temperatures escalating from 45.3°F (7.4°C) in March to 68.5°F (20.3°C) in May. Correspondingly, the nightly low temperatures rise from 30°F (-1.1°C) in March to a pleasant 48.9°F (9.4°C) in May. The rainfall sees an increase during this period, leading to a peak in May with rainfall measuring 3.43" (87mm) across 20.9 days. Despite increased rains, the duration of daylight also extends from 12 hours in March to 14.4 hours in May, providing ample opportunity to enjoy the spring weather.Summer weather in McHenry
Summers in McHenry are characterized by mild and comfortable temperatures. High temperatures hover around 78.3°F (25.7°C) to 79.9°F (26.6°C) from June to August, while low temperatures remain between 55.4°F (13°C) and 58.8°F (14.9°C). Despite rainfall dipping slightly compared to spring, rainfall in summers measure from 2.56" (65mm) to 3.19" (81mm). However, McHenry benefits from extended daylight during this period with an average of 14.6 hours to 14.9 hours daily.Autumn weather in McHenry
In autumn, McHenry experiences a perceptible dip in temperatures, ranging from 72.1°F (22.3°C) in September to 46.8°F (8.2°C) in November for high temperatures. The corresponding low temperatures also decrease from 52.3°F (11.3°C) in September to 31.5°F (-0.3°C) in November. Additionally, rainfall during this period starts high at 2.36" (60mm) in September, with a slight climb to 2.64" (67mm) in October, before it decreases sharply to 1.85" (47mm) in November.Winter weather in McHenry
Winter in McHenry is distinctly cold with average high temperatures plummeting to 38.3°F (3.5°C) in December and reaching the lowest at 32°F (0°C) in January. On a similar trajectory, average low temperatures hit the minimum at 19.6°F (-6.9°C) in January. While the town experiences relatively lower rainfall during this period, it faces high snowfall, specifically 5.24" (133mm) in December and 5.16" (131mm) in January.Weather in January
The arrival of the new year in McHenry, Maryland, means bracing for the coldest month, with an average high temperature peaking at 32°F (0°C). A heavy overcast sky paints a peaceful winter picture, with dense cloud coverage, a reduction in sunshine hours, and decreased visibility adding to the wintry atmosphere. Weather in January »Weather in February
Following the winter peak in January, February in McHenry experiences a slight upturn in temperatures, yet the cold snap persists. February transitions the weather from harsh winter to early signs of spring, with fluctuations in rain and snow, and an evolution in sunlight hours and wind pattern. Weather in February »Weather in March
March ushers in the spring season in McHenry, providing a significant relief from the winter chill. The temperature swing in March, from frigid February, is a clear indication of an impending warmer spell ahead. As the ground starts to thaw, the melting snow paves the way for increased rainfall. Weather in March »Weather in April
April showcases a noticeable spring-like transformation in McHenry, while the city embarks on the journey from frosty winter to blossoming spring. The latent sunshine from March amplifies, permitting extended outdoor excursions. Though rainfall persists, the snow completely melts away by April, creating an ambient environment for delicate spring flowers to bloom. Weather in April »Weather in May
May serves as a harbinger of summer in McHenry, initiating a definite shift towards the warmer end of the spectrum. With the environment in full bloom, and January's lingering frost a distant memory, the city settles into a comfortable warming trend. Weather in May »Weather in June
Summer makes its complete ingress in June in McHenry with a pleasant warmth gracing the Maryland city. As the season progresses, the weather conditions remain relatively stable, providing for leisurely pursuits such as fishing, boating, and hiking. Weather in June »Weather in July
July, being the toast of the summer season in McHenry, witnesses an escalation in warmth, marking it the year’s warmest month with temperatures spiraling up to 79.9°F (26.6°C). Enjoying the city during this period involves participating in a myriad of water-based summer activities. Weather in July »Weather in August
August signals a form of climatic stability in McHenry, with a gentle slant towards lower temperatures compared to July. Summer peaks in July and starts to taper off as August unfolds, marking the beginning of the end of summer. Weather in August »Weather in September
As the first wave of autumn breezes into McHenry, September exhibits a conspicuous drop in temperature from summer. With a temperature range of around 72.1°F (22.3°C), September initiates the transition from sun-soaked summer days to cool, crisp fall weather. Weather in September »Weather in October
October in McHenry signifies the peak of autumn, reflecting a vivid display of colors from fall foliage distinctly contrasting with the October sky. With the environment metamorphosed into a kaleidoscope of fall shades, the city takes on a new identity. Weather in October »Weather in November
November transports McHenry from the colourful autumn into the early stages of winter. With trees shedding leaves and temperatures continuing their downward spiral, the city braces for pristiine snowfall. Daylight hours dwindle, resulting in shorter days and elongated nights, while cloud cover witnesses a gradual surge. Weather in November »Weather in December
December in McHenry marks the onset of the holiday season, marked by Christmas cheer and an increase in snowfall, with 5.24" (133mm) precipitation. With the winter in full flow, temperatures continue to drop, preparing the city for a festive end of the year. Weather in December »Updated: Jul 12, 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
In McHenry, the average lowest temperatures are observed in January, with a high of 32°F (0°C) and a low of 19.6°F (-6.9°C).
Throughout the year, there are 166.5 rainfall days, and 30.79" (782mm) of precipitation is accumulated.
January through May, October through December are months with snowfall.
Throughout the year, there are 48.4 snowfall days, and 26.69" (678mm) of snow is accumulated.
The month with the least sunshine is January, with an average of 3.1h of sunshine.
The most humid month is February, with an average relative humidity of 87%.
The month with the most snowfall is February, when snow falls for 9.8 days and typically aggregates up to 5.28" (134mm) 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 lowest humidity in McHenry are April, June through August, with an average relative humidity of 79%.
May is the month with the most rainfall. Rain falls for 20.9 days and accumulates 3.43" (87mm) of precipitation.
The months with the highest UV index are May through August, with an average maximum UV index of 5.
In McHenry, snow does not fall in June through September.
June has the longest days of the year, with an average of 14h and 54min of daylight.
July stands out as McHenry's warmest month, with temperatures ranging between an average high of 79.9°F (26.6°C) and a low of 58.8°F (14.9°C).
The month with the most sunshine is August, with an average of 9.7h of sunshine.
November is the month with the least rainfall. Rain falls for 8.8 days and accumulates 1.85" (47mm) of precipitation.
The month with the shortest days is December, with an average of 9h and 24min of daylight.
December is the month with the lowest UV index, with an average maximum UV index of 1.
Average temperature
McHenry, MD
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (32°F).
The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is January (19.6°F).
Average pressure
McHenry, MD
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.08"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.98"Hg - Average pressure in May:
30"Hg - Average pressure in June:
29.95"Hg
- Average pressure in July:
29.98"Hg - Average pressure in August:
30"Hg - Average pressure in September:
30.06"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
McHenry, MD
- Average wind speed in January:
9.1mph - Average wind speed in February:
8.9mph - Average wind speed in March:
8.1mph - Average wind speed in April:
8mph - Average wind speed in May:
6.6mph - Average wind speed in June:
6.1mph
- Average wind speed in July:
5.1mph - Average wind speed in August:
4.8mph - Average wind speed in September:
5.4mph - Average wind speed in October:
6.6mph - Average wind speed in November:
7.3mph - Average wind speed in December:
8.4mph
The windiest month (with the highest average wind speed) is January (9.1mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity
McHenry, MD
The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are April, June, July and August (79%).
Average rainfall
McHenry, MD
- Average rainfall in January:
2.09" - Average rainfall in February:
2.44" - Average rainfall in March:
2.13" - Average rainfall in April:
2.76" - Average rainfall in May:
3.43" - Average rainfall in June:
2.95"
- Average rainfall in July:
3.19" - Average rainfall in August:
2.56" - Average rainfall in September:
2.36" - Average rainfall in October:
2.64" - Average rainfall in November:
1.85" - Average rainfall in December:
2.4"
The wettest month (with the highest rainfall) is May (3.43").
The driest month (with the least rainfall) is November (1.85").
Average rainfall days
McHenry, MD
- Average rainfall days in January:
8 days - Average rainfall days in February:
7.3 days - Average rainfall days in March:
11.1 days - Average rainfall days in April:
15.9 days - Average rainfall days in May:
20.9 days - Average rainfall days in June:
19.2 days
- Average rainfall days in July:
19.3 days - Average rainfall days in August:
18.3 days - Average rainfall days in September:
15.5 days - Average rainfall days in October:
14.1 days - Average rainfall days in November:
8.8 days - Average rainfall days in December:
8.1 days
The month with the highest number of rainy days is May (20.9 days).
The month with the least rainy days is February (7.3 days).
Average snowfall
McHenry, MD
- Average snowfall in January:
5.16" - Average snowfall in February:
5.28" - Average snowfall in March:
3.54" - Average snowfall in April:
1.38" - Average snowfall in May:
0.94" - Average snowfall in June:
0"
The month with the highest snowfall is February (5.28").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
McHenry, MD
- Average snowfall days in January:
11.8 days - Average snowfall days in February:
9.8 days - Average snowfall days in March:
7.3 days - Average snowfall days in April:
2.3 days - Average snowfall days in May:
0.5 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:
2.5 days - Average snowfall days in November:
5.1 days - Average snowfall days in December:
9.1 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
McHenry, MD
- Average daylight in January:
9h and 48min - Average daylight in February:
10h and 42min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 24min - 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 6min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 24min
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).
- Average sunshine in January:
3h and 6min - Average sunshine in February:
3h and 48min - Average sunshine in March:
5h and 30min - Average sunshine in April:
7h and 36min - Average sunshine in May:
8h and 24min - Average sunshine in June:
9h and 18min
- Average sunshine in July:
9h and 36min - Average sunshine in August:
9h and 42min - Average sunshine in September:
8h and 30min - Average sunshine in October:
5h and 12min - Average sunshine in November:
4h and 54min - Average sunshine in December:
3h and 36min
The month with the most sunshine is August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).
Average sunshine days
McHenry, MD
- Average sunshine days in January:
14 days - Average sunshine days in February:
12.3 days - Average sunshine days in March:
14.3 days - Average sunshine days in April:
12.2 days - Average sunshine days in May:
8.3 days - Average sunshine days in June:
9.8 days
- Average sunshine days in July:
9.8 days - Average sunshine days in August:
11.3 days - Average sunshine days in September:
12.3 days - Average sunshine days in October:
13.6 days - Average sunshine days in November:
16.5 days - Average sunshine days in December:
15.5 days
The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is May (8.3 days).
Average UV index
McHenry, MD
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
McHenry, MD
The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 40).
Average visibility
McHenry, MD
The months with the highest visibility are January, February, March, April, May, June, July, August, October, November and December (5mi).
The month with the lowest visibility is September (4mi).
