Climate and monthly weather forecastGaithersburg, MD
Climate and monthly weather forecast
The climate of Gaithersburg
Gaithersburg, nestled in the heart of Maryland, USA, boasts a predominantly Humid subtropical climate, as per the Köppen climate classification with its code being Cfa. This code correlates with no dry seasons throughout the year, painting a picture of a region that experiences relatively high amounts of precipitation and humidity. The sky remains dominated by clouds with an average cloud cover ranging from 30% to 46%.Throughout the year, the average high temperature fluctuates from 38.8°F (3.8°C) in the cold season to a peak of 86.9°F (30.5°C) during the warm months. The average low ranges from a chilly 25.2°F (-3.8°C) to a moderate 67.6°F (19.8°C). Precipitation patterns cover the area in a wet blanket throughout the year, with an average rainfall measure between 1.73" (44mm) to 3.82" (97mm) per month.
Gaithersburg also experiences snowfall, typically from December to March, with January witnessing the most snowfall at 2.76" (70mm). The wind blows in at an average speed from 4.9mph (7.9km/h) to 8mph (12.9km/h), indicating a calm to moderate breeze. Unique conditions emerge in July, when Gaithersburg experiences the highest temperature, rainfall, and wind gusts of 12.1mph (19.5km/h).
The best time to visit Gaithersburg
The ideal time to visit Gaithersburg is betwixt May and June. The average high temperature during these months span from 73.6°F (23.1°C) to 81.3°F (27.4°C), providing pleasant weather for outdoor activities. Despite the slightly increased rainfall amounts in these months, the relatively high temperature balances it out and creates a welcoming atmosphere for tourists. The daylight hours are longest in these months, offering ample time to explore the locale.The worst time to visit Gaithersburg
Tourists are advised to avoid planning a trip to Gaithersburg between December and February as these are the coldest months. The temperature during this period plunges to an average low from 25.2°F (-3.8°C) to 27.9°F (-2.3°C). Additionally, the area sees snowfall with January registering the highest, slightly less than 3" (76mm). The frequent snowfall and low temperatures are not ideal if someone seeks to engage in outdoor activities and sightseeing.Spring weather in Gaithersburg
Spring in Gaithersburg, enveloping March, April, and May, is marked by a gradual increase in temperature, soaring from an average low of 35.6°F (2°C) to an average high of 73.6°F (23.1°C). The rainfall measures consistently rise from 2.13" (54mm) to 3.19" (81mm), respectively. The city experiences a ramping up of daylight hours from 12 hours to 14.3 hours, bringing in an abundance of sunshine that bodes well for springtime explorations.Summer weather in Gaithersburg
In Gaithersburg, Summer takes hold from June to August, with average high temperatures rising from a comfortable 81.3°F (27.4°C) - reaching a zenith in July at 86.9°F (30.5°C), before slightly receding to 84.6°F (29.2°C) in August. The humidity remains more or less stable in the mid-70s percentile. The rainfall increases notably in this period, culminating in August with 3.82" (97mm). Despite the increased wetness, the ample sun and warmth make it an enjoyable time for visitors.Autumn weather in Gaithersburg
Autumn descends on Gaithersburg from September to November. The atmosphere cools down during this period with the average high temperature steadily declining from 77.7°F (25.4°C) to 53.1°F (11.7°C) - a marked contrast to summer’s warmth. Rainfall decreases as well during autumn, tapering off to 2.13" (54mm) by November. However, the dropping temperatures and receding rain make the autumnal months quite pleasant and ideal for sightseeing.Winter weather in Gaithersburg
Winter wields its cold grasp on Gaithersburg from December to February, bringing an average low temperature that scuds from 32.2°F (0.1°C) to 25.2°F (-3.8°C). The daylight hours shrink to the shortest of the year in December at 9.5 hours, and the sun shines for a fewer number of days. Additionally, the months of January and February experience snowfall ranging from 2.76" (70mm) to 2.36" (60mm). The chill, limited sunshine, and snowy conditions make winter less welcoming for travelers.Weather in January
With its icy and raw conditions, Gaithersburg, Maryland's January weather offers a characteristic winterscape. Despite being the second coldest month of the year, January sees temperatures ranging from 25.2°F (-3.8°C) to 38.8°F (3.8°C). Weather in January »Weather in February
A transition towards warmer temperatures begins in February. A slight rise in temperature, from January's freezing cold, features temperatures that fluctuate from 27.9°F (-2.3°C) to 43.2°F (6.2°C). The frosty conditions still persist with regular snowfall, though lesser compared to January. Weather in February »Weather in March
The salient feature of Gaithersburg's March weather is the significant jump in temperatures from a low of 35.6°F (2°C) to a high of 51.4°F (10.8°C). The onset of spring is evident, and warmer days are more frequent. The city receives increased daylight, igniting the mood for outdoor activities. Weather in March »Weather in April
April showcases a marked transformation in the weather conditions of Gaithersburg. Spring is in full bloom, and temperatures display an upward trend, now ranging from 45.5°F (7.5°C) to 63.9°F (17.7°C). The city witnesses a transition from cold to moderate conditions. Weather in April »Weather in May
May marks the onset of warmer climates, with temperatures from 55°F (12.8°C) to 73.6°F (23.1°C). Gaithersburg's idyllic Spring conditions are surely a treat in the month of May. The rainfall propels the city's flora into full bloom, translating into a vibrant palette of colors. Weather in May »Weather in June
In June, Gaithersburg weather transitions towards the summer season. The city experiences notable rising temperatures making their way from 62.8°F (17.1°C) to 81.3°F (27.4°C). With the increase in sunshine duration, parks and beaches become popular hangout spots. Weather in June »Weather in July
July, the hot and humid peak of summer is graced with the highest average temperatures between 67.6°F (19.8°C) and 86.9°F (30.5°C). Known for its sunny and clear skies, July is the ideal month for soaking up the Gaithersburg summer sun. Weather in July »Weather in August
August almost mirrors July when it comes to weather in Gaithersburg. The temperature fluctuates from 66.4°F (19.1°C) to 84.6°F (29.2°C), making it the second warmest month of the year. There is an increase in rainfall levels, providing respite from the blazing sun. Weather in August »Weather in September
Gaithersburg's September weather represents the gateway to fall, with temperatures declining from the peak summer highs to a range from 59.9°F (15.5°C) to 77.7°F (25.4°C). September sees a fall in both humidity and precipitation levels compared to August. Weather in September »Weather in October
October ushers in a crisp, enchanting fall season in Gaithersburg. The temperature range shifts to a more comfortable bracket from 49.3°F (9.6°C) to 65.3°F (18.5°C). October days glorify the autumn season with bright, changing leaves and cool temperatures. Weather in October »Weather in November
The fall leaves give way to winter's onset in November, as the temperature continues to drop to the range of 38.3°F (3.5°C) to 53.1°F (11.7°C). Despite cool temperatures, the weather remains largely dry with occasional showers. Weather in November »Weather in December
December's chill becomes more pronounced, ushering in the true winter spirit with temperatures ranging from 32.2°F (0.1°C) to 44.2°F (6.8°C). Gaithersburg experiences a colder and festive atmosphere during this month. Snowfall makes a comeback after a long absence since early spring. Weather in December »Updated: Aug 1, 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
January, noted for its average high-temperature of 38.8°F (3.8°C) and an average low-temperature of 25.2°F (-3.8°C), is considered the coldest month.
The month with the least rainfall is January, when the rain falls for 8.7 days and typically collects 1.73" (44mm) of precipitation.
Throughout the year, in Gaithersburg, there are 154.8 rainfall days, and 29.09" (739mm) of precipitation is accumulated.
January through May, November and December are months with snowfall.
January is the month with the most snowfall. Snow falls for 4.8 days and accumulates 2.76" (70mm) of snow.
In Gaithersburg, during the entire year, snow falls for 16.7 days and aggregates up to 9.76" (248mm) of snow.
The months with the least sunshine are January, February and December, with an average of 5.1h of sunshine.
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.
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 highest humidity are May, October and December, with an average relative humidity of 77%.
The months with the highest UV index are May through August, with an average maximum UV index of 6.
June through October are months without snowfall.
The month with the longest days is June, with an average of 14h and 54min of daylight.
The warmest period tends to be July, when average temperatures fluctuate between a high of 86.9°F (30.5°C) and a low of 67.6°F (19.8°C).
July is the least humid month in Gaithersburg, with an average relative humidity of 72%.
The month with the most sunshine is July, with an average of 10.8h of sunshine.
The month with the most rainfall is August, when the rain falls for 16.7 days and typically aggregates up to 3.82" (97mm) of precipitation.
With an average of 9h and 30min of daylight, December has the shortest days of the year.
Average temperature
Gaithersburg, MD
The warmest month (with the highest average high temperature) is July (86.9°F).
The month with the lowest average high temperature is January (38.8°F).
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).
Average pressure
Gaithersburg, MD
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.07"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.99"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.95"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.99"Hg - Average pressure in September:
30.05"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
Gaithersburg, MD
- Average wind speed in January:
7.7mph - Average wind speed in February:
7.7mph - Average wind speed in March:
8mph - Average wind speed in April:
7.8mph - Average wind speed in May:
6.3mph - Average wind speed in June:
5.8mph
- Average wind speed in July:
5mph - Average wind speed in August:
4.9mph - Average wind speed in September:
5.5mph - Average wind speed in October:
6.5mph - Average wind speed in November:
6.8mph - Average wind speed in December:
7.1mph
The windiest month (with the highest average wind speed) is March (8mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity
Gaithersburg, MD
The months with the highest relative humidity are May, October and December (77%).
The month with the lowest relative humidity is July (72%).
Average rainfall
Gaithersburg, MD
- Average rainfall in January:
1.73" - Average rainfall in February:
1.89" - Average rainfall in March:
2.13" - Average rainfall in April:
2.44" - Average rainfall in May:
3.19" - Average rainfall in June:
2.48"
- Average rainfall in July:
3.07" - Average rainfall in August:
3.82" - Average rainfall in September:
1.97" - Average rainfall in October:
2.17" - Average rainfall in November:
2.13" - Average rainfall in December:
2.09"
The wettest month (with the highest rainfall) is August (3.82").
The driest month (with the least rainfall) is January (1.73").
Average rainfall days
Gaithersburg, MD
- Average rainfall days in January:
8.7 days - Average rainfall days in February:
9.2 days - Average rainfall days in March:
12.5 days - Average rainfall days in April:
14.6 days - Average rainfall days in May:
17.4 days - Average rainfall days in June:
15.2 days
- Average rainfall days in July:
16.8 days - Average rainfall days in August:
16.7 days - Average rainfall days in September:
12.9 days - Average rainfall days in October:
11.3 days - Average rainfall days in November:
9 days - Average rainfall days in December:
10.5 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (8.7 days).
Average snowfall
Gaithersburg, MD
- Average snowfall in January:
2.76" - Average snowfall in February:
2.36" - Average snowfall in March:
2.56" - Average snowfall in April:
0.35" - Average snowfall in May:
0.16" - Average snowfall in June:
0"
The month with the highest snowfall is January (2.76").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days
Gaithersburg, MD
- Average snowfall days in January:
4.8 days - Average snowfall days in February:
5.3 days - Average snowfall days in March:
3.3 days - Average snowfall days in April:
0.2 days - Average snowfall days in May:
0.1 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:
0 days - Average snowfall days in November:
0.5 days - Average snowfall days in December:
2.5 days
The month with the highest number of snowfall days is February (5.3 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight / Average sunshine
Gaithersburg, MD
- Average daylight in January:
9h and 48min - Average daylight in February:
10h and 48min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 18min - 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 12min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 30min
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 30min).
- Average sunshine in January:
5h and 6min - Average sunshine in February:
5h and 6min - Average sunshine in March:
6h and 48min - Average sunshine in April:
8h and 54min - Average sunshine in May:
8h and 54min - Average sunshine in June:
10h and 18min
- Average sunshine in July:
10h and 48min - Average sunshine in August:
10h and 18min - Average sunshine in September:
9h and 0min - Average sunshine in October:
5h and 36min - Average sunshine in November:
5h and 48min - Average sunshine in December:
5h and 6min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 6min).
Average sunshine days
Gaithersburg, MD
- Average sunshine days in January:
18 days - Average sunshine days in February:
15.7 days - Average sunshine days in March:
15.6 days - Average sunshine days in April:
13.3 days - Average sunshine days in May:
11.7 days - Average sunshine days in June:
13.5 days
- Average sunshine days in July:
11.5 days - Average sunshine days in August:
11.9 days - Average sunshine days in September:
14.9 days - Average sunshine days in October:
17.5 days - Average sunshine days in November:
19.6 days - Average sunshine days in December:
18.4 days
The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is July (11.5 days).
Average UV index
Gaithersburg, 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
Gaithersburg, MD
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility
Gaithersburg, MD
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
