The climate of Rockville
Rockville, located in
Maryland, USA, has a predominating Köppen climate classification of Cfa, indicating a humid subtropical state where there is no dry season. A comprehensive study of the climatological parameters reveals some fascinating patterns and fluctuations throughout the year.
Across the year, daytime temperatures demonstrate considerable variability, ranging from a low average of 39°F (3.9°C) in
January to a peak average of 87.1°F (30.6°C) in
July. Night time temperatures also reflect this trend, recording a minimum average of 26.2°F (-3.2°C) in January and a maximum of 68.5°F (20.3°C) in July. Consequently, a broad temperature range characterizes Rockville's climate, indicative of the transition from quite chilly winters to balmy summers.
Humidity index also fluctuates throughout the year, with values averaging between 70% in July and 77% in
December. Rainfall trends are somewhat steady with minor ups and downs across the months, with the record rainfall of around 3.9" (99mm) occurring in
August. Although snowfall is minimal and mainly concentrated in the first quarter of the year with the highest average of around 3.03" (77mm) in
March.
The city's daylight hours wax and wane according to the calendar months, with the shortest average daylight of 9.8 hours in December and the longest of 14.9 hours in
June. The average hours of sunshine follow this pattern, ranging from 5.1 hours in January to 10.8 hours in July.
The best time to visit Rockville
Given the city's varying climatological parameters, the best time for a visit to
Rockville would arguably be from
May to
September. During this period, daytime temperatures remain comfortably within the 64.4°F (18°C) to 87.1°F (30.6°C) range, while the nights mostly stay above 55.4°F (13°C) offering both warm days and agreeably mild nights. Moreover, visitors can enjoy the longest daylight hours with average sunshine duration extending from 8.9 hours in May to a generous 10.8 hours in
July.
The worst time to visit Rockville
Given its climatic conditions, the least favorable period for visiting
Rockville would be the winter months, particularly from
December to
February. During this period, temperatures can drop to a chilly average low of 26.2°F (-3.2°C) in
January, and snowfall, although minimal, peaks in January with an average of 2.6" (66mm).
Spring weather in Rockville
Spring in
Rockville features a gradual increase in temperature; in
March, the daytime average stands at 52°F (11.1°C), which leaps to 64.4°F (18°C) in
April and 73.9°F (23.3°C) in
May. The night time temperatures also rise in step, from an average of 36.1°F (2.3°C) in March to 55.4°F (13°C) in May. The season is marked by increasing day lengths, crescendoing to an average of 14.3 hours of daylight and 8.9 hours of sunshine by May.
Summer weather in Rockville
The summer season in
Rockville showcases the year's highest temperatures, with
July's averages ruling at 87.1°F (30.6°C) during the day and 68.5°F (20.3°C) at night. On the brighter side, the region enjoys extended daylight hours that last from 14.6 hours in July to 13.7 hours in
August, coupled with high amounts of sunshine, peaking at 10.8 hours in July.
Autumn weather in Rockville
Autumn in
Rockville witnesses a gradual decrease in temperatures, sinking from 77.9°F (25.5°C) in
September to 53.4°F (11.9°C) by
November during the daytime, and from 60.8°F (16°C) to 38.5°F (3.6°C) during the night. The daylight hours also retreat, with average daylight decreasing from 12.4 hours in September to 10 hours by November.
Winter weather in Rockville
Winter announces itself in
Rockville with a sharp plunge in temperatures, the daytime average reaches a low of 39°F (3.9°C) in
January and the nighttime average dips to 26.2°F (-3.2°C). Although the city experiences some snowfall during this season, the volume is modest. Daylight hours are the shortest in the year averaging 9.5 hours in
December, with sunshine duration equally reduced to 5.1 hours. This season is indeed the coldest and least sunlit period in Rockville.
Weather in January
Grounded firmly in the heart of winter,
Rockville,
Maryland experiences chilly conditions throughout
January. Nestled between the milder
December and the slightly warmer
February, daytime temperatures may rise up to 39°F (3.9°C), while at night they can plunge to as low as 26.2°F (-3.2°C).
Weather in January »Weather in February
February arrives with a subtle shift. There's a slight increase in average temperatures compared to
January, reaching 43.9°F (6.6°C) at the highest and dipping to 28.6°F (-1.9°C) at the lowest. This time of the year paints images of melting snow and icicles, preparing to welcome spring.
Weather in February » Weather in March
There's a significant change in
Rockville's climate by
March. Temperatures range from 52°F (11.1°C) at a high to 36.1°F (2.3°C) at a low, signaling the approach of spring. The weather becomes increasingly dynamic, with alterations between bright, sunny days and significant rainfall.
Weather in March »
Weather in April
April, representing spring in its full form, embraces
Rockville with a mix of consistent rainfall and warm weather. The temperatures normally range from a maximum of 64.4°F (18°C) to a minimum of 45.9°F (7.7°C), showcasing a marked increase from
March.
Weather in April » Weather in May
May turns a new leaf in
Rockville,
Maryland, as it marks the transition from spring to summer. The weather revolves around the spectrum of warm to hot, with temperature readings setting between 73.9°F (23.3°C) at the top end and 55.4°F (13°C) at the bottom.
Weather in May » Weather in June
The pinnacle of summer in
Rockville,
June showcases a rise in temperatures, peaking at 82°F (27.8°C) and settling at 63.7°F (17.6°C). Notably, the length of daylight peaks at nearly 15 hours, maximizing opportunities for summer activities.
Weather in June »
Weather in July
July in
Rockville offers the warmest climate of the year, with temperatures soaring to an apex of 87.1°F (30.6°C) and falling to a relatively warmer 68.5°F (20.3°C). While rainfall is common, it doesn’t take away from sunshine hours, which hover around the maximum amounts experienced in
June.
Weather in July » Weather in August
August retains the traits of
Rockville's warm summer, though with temperatures slightly falling from the
July highs to a range of 85.3°F (29.6°C) and 67.5°F (19.7°C). This month transitions the switch from summer to autumn, impacting the city's weather.
Weather in August » Weather in September
September in
Rockville witnesses a significant drop in temperatures from
August, going from a high of 77.9°F (25.5°C) to a low of 60.8°F (16°C). The onset of autumn is apparent, with conditions starting to lean towards the cooler side.
Weather in September »
Weather in October
Weather in November
The penultimate month,
November, brings
Rockville one step closer to winter. The town experiences a further decline in temperatures, with highs of 53.4°F (11.9°C) and lows of 38.5°F (3.6°C). Rainfall sees a slight drop as the city gears up for the prospect of snow dominating the scene in the following month.
Weather in November »Weather in December
Immersed in the spirit of the holiday season,
December in
Rockville plunges into the heart of winter with temperatures oscillating between a high of 45.3°F (7.4°C) and a low of 32.9°F (0.5°C). The chance of snowfall begins to escalate, casting a festive white blanket over the city.
Weather in December »