The climate of Derry
Derry,
New Hampshire, resides in the geographic classification of Dfb, a zone determined by the Köppen climate classification. This zone signifies a humid continental climate with no dry season and warm summers. Weather conditions in Derry oscillate significantly across the year, providing a blend of temperatures and weather patterns dynamic and distinct.
Analyzing the available data, Derry experiences temperature highs from 30.6°F (-0.8°C) in
January to 81.7°F (27.6°C) in
July. On the lower scale, temperatures range from 18°F (-7.8°C) in January to 61°F (16.1°C) in July, indicating a broad thermal range. Derry also encounters varied humidity levels, with the highest relative humidity of 81% in
February and the lowest of 72% in
April.
The town observes rainfall in a rather consistent manner throughout the year. The quantity of rainfall fluctuates from 0.75" (19mm) in January to 1.38" (35mm) in
October. The number of rainfall days ranges from 4.1 days in January to a peak of 12.1 days in
June. Interestingly, snowfall occurs from
November to April, with the maximum snowfall of 2.99" (76mm) in
December. Cloud coverage varies throughout the year, around 45% in January spiraling up to 51% in
March.
Notably, the wind speed in Derry, on average, ranges from 8.3mph (13.4km/h) in January to a low of 5.1mph (8.2km/h) in
August. Alongside, the highest UV index is observed between
May and August, with a magnitude of 6.
The best time to visit Derry
Looking at the data, the most optimal time to visit
Derry would be between
May and
September as these months offer warm temperatures, favourable for outdoor activities. Temperatures escalate to pleasant highs of 66.9°F (19.4°C) to 81.7°F (27.6°C) and lows between 47.1°F (8.4°C) to 61°F (16.1°C). Furthermore, daylight hours are longest between May and
August, extending from 14.7 hours to 15.3 hours, offering plenty of daylight for sightseeing and explorations.
The worst time to visit Derry
The period from
November to
March can be considered less traveler-friendly due to cold temperatures and snowfall. The temperatures during these months fluctuate between highs of 30.6°F (-0.8°C) to 41.2°F (5.1°C) and hit bitter lows from 18°F (-7.8°C) to 26.4°F (-3.1°C). Snowfall is at its pinnacle in
December with 2.99" (76mm) of snow.
Spring weather in Derry
Spring in
Derry from
March to
May witnesses a rapid transition in temperatures from chilly winters towards warmer conditions. The high temperatures range from 41.2°F (5.1°C) in March to 66.9°F (19.4°C) in May and lows sit between 26.4°F (-3.1°C) to 47.1°F (8.4°C). Rainfall increases over the season, beginning at 1.18" (30mm) in March and escalating to 0.98" (25mm) in May.
Summer weather in Derry
Summers from
June to
August in
Derry are pleasant and warm. High temperatures range from 74.5°F (23.6°C) in June to 81.7°F (27.6°C) in
July, while lows vary from 54.5°F (12.5°C) to 61°F (16.1°C). Even though rainfall is slightly high in June and July with 1.18" (30mm) and 1.3" (33mm) respectively, the extended daylight hours of a maximum of 15.3 hours in June provide plenty of time for outdoor activities.
Autumn weather in Derry
Autumn, extending from
September to
November, witnesses a steady decline in temperatures. The highest temperature during this period drops from 72.1°F (22.3°C) in September to 46.6°F (8.1°C) in November and the lowest descends from 54°F (12.2°C) to 33.6°F (0.9°C). November sees a slight increase in rainfall with a peak of 1.3" (33mm).
Winter weather in Derry
In winters from
December to
February,
Derry becomes winter wonderland, with temperatures dropping low and snowfall marking its presence. Highs drop from 36.3°F (2.4°C) in December to 30.6°F (-0.8°C) in
January with the lowest temperatures hovering between 25.3°F (-3.7°C) and 18°F (-7.8°C). Snowfall is a typical feature with 2.99" (76mm) in December, 2.4" (61mm) in January contributing to the snow-white charm Derry exudes in winters.
Weather in January
January in
Derry,
New Hampshire typically welcomes the new year with cold temperatures and a significant chance of snowfall. On average, the temperatures range from 18°F (-7.8°C) to around 30.6°F (-0.8°C), with 2.4" (61mm) of snow accumulating over approximately seven days.
Weather in January » Weather in February
As
Derry transitions from
January to
February, the weather conditions observe a slight shift while maintaining a predominantly cold atmosphere. Although February is marginally warmer, it is noteworthy to mention that the snowfall stays at about 2.32" (59mm).
Weather in February »Weather in March
March announces the arrival of early spring in
Derry, with temperatures starting to rise, snowfall decreasing, and daylight hours moderately lengthening. However, one expected change in March is an increase in rainfall, about 1.18" (30mm) over approximately eight days, signifying a shift from snowfall to rainfall.
Weather in March »
Weather in April
April in
Derry is known as a time of significant change, with temperatures increasing noticeably compared to the previous month, marking a transition from winter to spring. This month registers the lowest snowfall of the year, a negligible 0.91" (23mm), indicating the late arrival of spring.
Weather in April » Weather in May
May defines the advent of consistently warmer days in
Derry. The rainfall increases, helping the land further bloom into a lush landscape after the long winter. A considerable change occurs in the temperature pattern, aiding the flourishing of flora and fauna.
Weather in May » Weather in June
June in
Derry represents the onset of summer, with longest daylight hours and a substantial spike in temperatures. Moo, it receives one of the highest amounts of rainfall for the year, clocking in at 1.18" (30mm), highlighting the nature of mixed summer weather.
Weather in June »
Weather in July
July is the height of summer in
Derry, signifying long sunny days accompanied by the season's maximum temperature and humidity. This month hits the peak mark with an average high temperature of 81.7°F (27.6°C), offering the quintessential summer climate.
Weather in July » Weather in August
August in
Derry sees a continuation of the summer season, with temperatures mildly cooler than
July, indicating the impending arrival of fall. Circumstances remain favorable for outdoor activity, although afternoon thunderstorms can occasionally alter plans.
Weather in August » Weather in September
September denotes the commencement of fall in
Derry. Amidst decline in daylight hours, the temperature too observes a significant drop, marking a farewell to summer and welcoming the autumn. An enchanting transformation blankets the town as leaves change into hues of red, orange, and yellow, offering a captivating panorama.
Weather in September »
Weather in October
October continues the fall season in
Derry, attracting leaf-peepers with its vibrant foliage and crisp autumn air. With temperatures dropping further and daylight decreasing, residents and visitors engage in seasonal activities, including pumpkin carving, apple cider processing, and haunted trail walks.
Weather in October » Weather in November
A shift towards colder weather patterns sets in during
November in
Derry. The first snowfall occurs this month, with an average accumulation of 0.75" (19mm), marking the onset of the upcoming winter season. The splendid fall foliage begins to ebb as the leaves shed, preparing the trees for the frigid months ahead.
Weather in November »Weather in December
December in
Derry ushers in the winter plenitude, with below-freezing temperatures becoming a norm and snowfall increasing. December's most significant weather aspect is its snowfall, seeing about 2.99" (76mm), making recreational snow activities popular.
Weather in December »