October weather forecast
Gaithersburg, MD

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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. This is the period when density of the hot Maryland summer dissipates and ushers in the much-awaited pleasant winter timings. This transition month sees comparatively more dry days, carving an opportunity for several open-air events and carnivals to take place.

Temperature

The average high-temperature in Gaithersburg drops in October, from September's moderately hot 77.7°F (25.4°C) to a comfortable 65.3°F (18.5°C). Throughout October nights, Gaithersburg experiences a consistent temperature average of 49.3°F (9.6°C).

Humidity

The months with the highest humidity in Gaithersburg are May, October and December, with an average relative humidity of 77%.

Rainfall

In Gaithersburg, during October, the rain falls for 11.3 days and regularly aggregates up to 2.17" (55mm) of precipitation. In Gaithersburg, during the entire year, the rain falls for 154.8 days and collects up to 29.09" (739mm) of precipitation.

Snowfall

In Gaithersburg, snow does not fall in June through October.

Daylight

The average length of the day in October in Gaithersburg, Maryland, is 11h and 10min.
On the first day of October in Gaithersburg, Maryland, sunrise is at 7:05 am and sunset at 6:50 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 6:08 pm EDT.

Sunshine

In October, the average sunshine in Gaithersburg, Maryland, is 5.6h.

UV index

In October, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.
Note: The maximum daily UV index of 3 in October converts into the following recommendations:
Exercise care. People with light skin might get burns in fewer than 30 minutes. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
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Frequently asked questions

What are October temperatures in Gaithersburg?

In October, the average high-temperature and low-temperature in Gaithersburg, Maryland, are 65.3°F (18.5°C) and 49.3°F (9.6°C) respectively. The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines air temperature and relative humidity, in August is estimated at 93.2°F (34°C).

What are the most humid months in Gaithersburg?

The months with the highest humidity in Gaithersburg are May, October and December, with an average relative humidity of 77%.

What is the average humidity in October in Gaithersburg?

The average relative humidity in October in Gaithersburg, Maryland, is 77%.

How much does it rain in Gaithersburg in October?

In Gaithersburg, Maryland, in October, during 11.3 rainfall days, 2.17" (55mm) of precipitation is typically accumulated.

When it does not snow in Gaithersburg?

June through October are months without snowfall in Gaithersburg.

Does it snow in Gaithersburg in October?

In Gaithersburg, in October, it doesn't snow. In November, it regularly snows.

What is the average length of the day in October in Gaithersburg?

In Gaithersburg, the average day length in October is 11h and 10min.

What time are sunrise and sunset in October in Gaithersburg?

In October, on the first day of the month, sunrise is at 7:05 am and sunset at 6:50 pm. On the last day of the month, in Gaithersburg, Maryland, sunrise is at 7:36 am and sunset at 6:08 pm EDT.

How long on average sun shines in October in Gaithersburg?

In October, the average sunshine duration is 5.6h.

How high is the UV index in October in Gaithersburg?

In October, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a medium health risk from unprotected exposure to UV radiation.
Today
Tomorrow
Long-term
YearJFMAMJJASOctoberND
Sep
October
Nov
Average high temperature
77.7°F 25.4°C
65.3°F 18.5°C
53.1°F 11.7°C
Average low temperature
59.9°F 15.5°C
49.3°F 9.6°C
38.3°F 3.5°C
Average pressure
30.05" 763mmHg
30.04" 763mmHg
30.14" 766mmHg
Average wind speed
5.5mph 8.9km/h
6.5mph 10.5km/h
6.8mph 10.9km/h
Average max. wind speed
5.7mph 9.2km/h
7.1mph 11.4km/h
7.6mph 12.2km/h
Average wind speed gusts
8.5mph 13.7km/h
10.7mph 17.2km/h
11.4mph 18.3km/h
Average humidity
75%
77%
75%
Average rainfall
1.97" 50mm
2.17" 55mm
2.13" 54mm
Average rainfall days
12.9
11.3
9
Average snowfall
0" 0mm
0" 0mm
0.2" 5mm
Average snowfall days
0
0
0.5
Average daylight
12h 2min
11h 1min
10h 0min
Average sunshine
9h 0min
5h 4min
5h 5min
Average sunshine days
14.9
17.5
19.6
Average UV index
5
3
2
Average cloud cover
36%
39%
36%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in October
Gaithersburg, MD

Average temperature in October - Gaithersburg, MD
  • Average high temperature in October: 65.3°F

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).

  • Average low temperature in October: 49.3°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).

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Average pressure in October
Gaithersburg, MD

Average pressure in October - Gaithersburg, MD
  • Average pressure in October: 30.04"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).

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Average wind speed in October
Gaithersburg, MD

Average wind speed in October - Gaithersburg, MD
  • Average wind speed in October: 6.5mph

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).

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Average humidity in October
Gaithersburg, MD

Average humidity in October - Gaithersburg, MD
  • Average humidity in October: 77%

The months with the highest relative humidity are May, October and December (77%).
The month with the lowest relative humidity is July (72%).

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Average rainfall in October
Gaithersburg, MD

Average rainfall in October - Gaithersburg, MD
  • Average rainfall in October: 2.17"

The wettest month (with the highest rainfall) is August (3.82").
The driest month (with the least rainfall) is January (1.73").

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Average rainfall days in October
Gaithersburg, MD

Average rainfall days in October - Gaithersburg, MD
  • Average rainfall days in October: 11.3 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).

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Average snowfall in October
Gaithersburg, MD

Average snowfall in October - Gaithersburg, MD
  • Average snowfall in October: 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").

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Average snowfall days in October
Gaithersburg, MD

Average snowfall days in October - Gaithersburg, MD
  • Average snowfall days in October: 0 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).

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Average daylight in October /
Average sunshine in October
Gaithersburg, MD

Average daylight in October / Average sunshine in October - Gaithersburg, MD
  • Average daylight in October: 11h and 1min

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 October: 5h and 4min

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).

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Average sunshine days in October
Gaithersburg, MD

Average sunshine days in October - Gaithersburg, MD
  • Average sunshine days in October: 17.5 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).

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Average UV index in October
Gaithersburg, MD

Average UV index in October - Gaithersburg, MD
  • Average UV index in October: 3

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).

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Average cloud cover in October
Gaithersburg, MD

Average cloud cover in October - Gaithersburg, MD
  • Average cloud cover in October: 39

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 30).

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Average visibility in October
Gaithersburg, MD

Average visibility in October - Gaithersburg, MD
  • Average visibility in October: 6mi

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).

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