Contents
- Weather in October
- Frequently asked questions
- Average temperature in October
- Average pressure in October
- Average wind speed in October
- Average humidity in October
- Average rainfall in October
- Average rainfall days in October
- Average snowfall in October
- Average snowfall days in October
- Average sea temperature in October
- Average daylight in October
- Average sunshine in October
- Average sunshine days in October
- Average UV index in October
- Average cloud cover in October
- Average visibility in October
Weather in October
Temperature
October brings a minor shift in the average high-temperature in Chatham, Massachusetts, adjusting from 66.6°F (19.2°C) in September to a still refreshing 59.5°F (15.3°C). Chatham documents a consistent average low-temperature of 54.9°F (12.7°C) at night during October.Humidity
In Chatham, Massachusetts, the average relative humidity in October is 77%.Rainfall
October is the month with the most rainfall in Chatham. Rain falls for 13.4 days and accumulates 2.83" (72mm) of precipitation.Snowfall
In Chatham, snow does not fall in May through October.Ocean temperature
In Chatham, the average seawater temperature in October is 58.3°F (14.6°C).Note: Unprotected swimming in 58.3°F (14.6°C) is dangerous due to potential cold shock. Especially when temperatures go below 50°F (10°C), leading to hyperventilation.
Daylight
In October, the average length of the day is 11h and 4min.On the first day of October, sunrise is at 6:37 am and sunset at 6:21 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 5:35 pm EDT.
Sunshine
The average sunshine in October is 6.6h.UV index
In Chatham, the average daily maximum UV index in October is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: The maximum UV index of 4 during October leads to these instructions:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in October?
What is the average humidity in October?
What is the rainiest month?
How many days does it rain in October?
When it does not snow?
Does it snow in October?
How cold is the water in October?
What is the average length of the day in October?
When is the sunrise / sunset in October?
How long on average sun shines in October?
What is the UV index intensity in October?
Average temperature in October
Chatham, MA
- Average high temperature in October: 59.5°F
The warmest month (with the highest average high temperature) is August (71.6°F).
The months with the lowest average high temperature are January and February (39°F).
- Average low temperature in October: 54.9°F
The month with the highest average low temperature is August (68.2°F).
The coldest month (with the lowest average low temperature) is January (31.6°F).
Average pressure in October
Chatham, MA
- Average pressure in October: 30.01"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in October
Chatham, MA
- Average wind speed in October: 15.5mph
The windiest month (with the highest average wind speed) is January (18mph).
The calmest month (with the lowest average wind speed) is August (11.4mph).
Average humidity in October
Chatham, MA
- Average humidity in October: 77%
The months with the highest relative humidity are June and July (85%).
The month with the lowest relative humidity is November (74%).
Average rainfall in October
Chatham, MA
- Average rainfall in October: 2.83"
The wettest month (with the highest rainfall) is October (2.83").
The driest month (with the least rainfall) is November (1.46").
Average rainfall days in October
Chatham, MA
- Average rainfall days in October: 13.4 days
The month with the highest number of rainy days is May (14.6 days).
The month with the least rainy days is February (8.3 days).
Average snowfall in October
Chatham, MA
- Average snowfall in October: 0"
The month with the highest snowfall is February (1.38").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in October
Chatham, MA
- Average snowfall days in October: 0 days
The month with the highest number of snowfall days is January (6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in October
Chatham, MA
- Average sea temperature in October: 58.3°F
The best month for swimming (with the highest average sea temperature) is August (67.6°F).
The coldest month (with the lowest average sea temperature) is March (39.8°F).
Average daylight in October /
Average sunshine in October
Chatham, MA
- Average daylight in October: 11h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in October: 6h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 4h and 18min).
Average sunshine days in October
Chatham, MA
- Average sunshine days in October: 15.5 days
The month with the most sunshine days is August (17.6 days).
The month with the least sunshine days is January (13 days).
Average UV index in October
Chatham, MA
- Average UV index in October: 4
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in October
Chatham, MA
- Average cloud cover in October: 41
The month with the most cloud cover is December (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in October
Chatham, MA
- Average visibility in October: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Chatham, Massachusetts, USA
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