October weather forecast
Onset, MA

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Weather in October

October, the same as September, in Onset, Massachusetts, is a moderate autumn month, with temperature in the range of an average low of 52.3°F (11.3°C) and an average high of 60.1°F (15.6°C).

Temperature

The average high-temperature slightly decreases in October, shifting from a pleasant 68.9°F (20.5°C) in September to a mild 60.1°F (15.6°C). In Onset, the nocturnal temperatures throughout October show a marginal dip from the daytime averages, settling at a fresh 52.3°F (11.3°C).

Humidity

The average relative humidity in October is 77%.

Rainfall

In Onset, during October, the rain falls for 14.4 days and regularly aggregates up to 3.43" (87mm) of precipitation. In Onset, during the entire year, the rain falls for 157.4 days and collects up to 32.2" (818mm) of precipitation.

Snowfall

Months with snowfall in Onset are January through April, October through December. October is the first month it typically snows in Onset. Throughout October, in the average 0.1 snowfall days, it receives 0.16" (4mm) of snow. In Onset, Massachusetts, during the entire year, snow falls for 21.7 days and aggregates up to 8.43" (214mm) of snow.

Ocean temperature

In Onset, in October, the average water temperature is 60.4°F (15.8°C).
Note: Swimming is not a pleasurable activity for the majority in water at 60.4°F (15.8°C). Breathing control gets harder as the water temperature dips from 69.8°F (21°C) to 59°F (15°C).

Daylight

In Onset, the average length of the day in October is 11h and 4min.
On the first day of the month, sunrise is at 6:40 am and sunset at 6:23 pm. On the last day of October, in Onset, sunrise is at 7:14 am and sunset at 5:38 pm EDT.

Sunshine

The average sunshine in October is 6.5h.

UV index

In Onset, the average daily maximum UV index in October is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: During October, 3 as the daily maximum UV index converts into the following advice:
Adopt protective measures - It is advised to guard against sun damage. To guard against the harmful effects of the Sun, minimize exposure during midday. Stay sun-safe with clothing that is both closely woven and worn loosely. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
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Frequently asked questions

What is the temperature in October in Onset?

The average high-temperature, in October, in Onset, is 60.1°F (15.6°C), while the average low-temperature is 52.3°F (11.3°C).

What is the average humidity in October in Onset?

The average relative humidity in October in Onset, Massachusetts, is 77%.

How much does it rain in Onset in October?

In Onset, in October, it is raining for 14.4 days, with typically 3.43" (87mm) of accumulated precipitation.

When does it start snowing in Onset?

October is the first month it typically snows. Throughout October, in the average 0.1 snowfall days, it receives 0.16" (4mm) of snow.

How cold is the water in October in Onset?

In Onset, in October, the average water temperature is 60.4°F (15.8°C). For swimming, a surface water temperature of 60.4°F (15.8°C) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 69.8°F (21°C).

How many hours of daylight does Onset have in October?

In October, the average day length in Onset is 11h and 4min.

What time are sunrise and sunset in October in Onset?

On the first day of October in Onset, sunrise is at 6:40 am and sunset at 6:23 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 5:38 pm EDT.

How long on average sun shines in October in Onset?

The average sunshine duration in October in Onset is 6.5h.

How high is the UV index in October in Onset?

In Onset, Massachusetts, the average daily maximum UV index in October is 3. A UV Index estimate of 3 to 5 represents a medium health risk from unsafe exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJFMAMJJASOctoberND
Sep
October
Nov
Average high temperature
68.9°F 20.5°C
60.1°F 15.6°C
50.9°F 10.5°C
Average low temperature
61.2°F 16.2°C
52.3°F 11.3°C
42.3°F 5.7°C
Average pressure
30.05" 763mmHg
30.01" 762mmHg
30.06" 764mmHg
Average wind speed
10.3mph 16.6km/h
11.8mph 19km/h
12.7mph 20.4km/h
Average max. wind speed
10.6mph 17.1km/h
12.7mph 20.4km/h
13.5mph 21.7km/h
Average wind speed gusts
16.3mph 26.2km/h
18.5mph 29.8km/h
19.3mph 31.1km/h
Average humidity
79%
77%
74%
Average rainfall
1.81" 46mm
3.43" 87mm
2.56" 65mm
Average rainfall days
12.3
14.4
11.2
Average snowfall
0" 0mm
0.16" 4mm
0.63" 16mm
Average snowfall days
0
0.1
1
Average sea temperature
65.8°F 18.8°C
60.4°F 15.8°C
53.2°F 11.8°C
Average daylight
12h 3min
11h 1min
9h 5min
Average sunshine
8h 4min
6h 3min
5h 2min
Average sunshine days
15.4
14.6
16.3
Average UV index
4
3
2
Average cloud cover
32%
40%
42%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in October
Onset, MA

Average temperature in October - Onset, MA
  • Average high temperature in October: 60.1°F

The warmest month (with the highest average high temperature) is July (75.6°F).
The month with the lowest average high temperature is January (36.9°F).

  • Average low temperature in October: 52.3°F

The month with the highest average low temperature is August (66.7°F).
The coldest month (with the lowest average low temperature) is January (27.7°F).

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Average pressure in October
Onset, MA

Average pressure in October - Onset, 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).

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Average wind speed in October
Onset, MA

Average wind speed in October - Onset, MA
  • Average wind speed in October: 11.8mph

The windiest month (with the highest average wind speed) is January (13.7mph).
The calmest month (with the lowest average wind speed) is August (8.7mph).

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Average humidity in October
Onset, MA

Average humidity in October - Onset, MA
  • Average humidity in October: 77%

The months with the highest relative humidity are June and July (81%).
The months with the lowest relative humidity are March and November (74%).

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Average rainfall in October
Onset, MA

Average rainfall in October - Onset, MA
  • Average rainfall in October: 3.43"

The wettest month (with the highest rainfall) is December (3.58").
The driest month (with the least rainfall) is September (1.81").

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Average rainfall days in October
Onset, MA

Average rainfall days in October - Onset, MA
  • Average rainfall days in October: 14.4 days

The month with the highest number of rainy days is July (16 days).
The month with the least rainy days is January (9 days).

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Average snowfall in October
Onset, MA

Average snowfall in October - Onset, MA
  • Average snowfall in October: 0.16"

The months with the highest snowfall are February and March (2.28").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in October
Onset, MA

Average snowfall days in October - Onset, MA
  • Average snowfall days in October: 0.1 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 and September (0 days).

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Average sea temperature in October
Onset, MA

Average sea temperature in October - Onset, MA
  • Average sea temperature in October: 60.4°F

The best month for swimming (with the highest average sea temperature) is August (68.4°F).
The coldest month (with the lowest average sea temperature) is February (38.2°F).

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Average daylight in October /
Average sunshine in October
Onset, MA

Average daylight in October / Average sunshine in October - Onset, 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 3min

The month with the most sunshine is August (Average sunshine: 10h and 42min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).

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Average sunshine days in October
Onset, MA

Average sunshine days in October - Onset, MA
  • Average sunshine days in October: 14.6 days

The month with the most sunshine days is November (16.3 days).
The month with the least sunshine days is April (12.5 days).

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Average UV index in October
Onset, MA

Average UV index in October - Onset, MA
  • Average UV index in October: 3

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).

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Average cloud cover in October
Onset, MA

Average cloud cover in October - Onset, MA
  • Average cloud cover in October: 40

The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 28).

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Average visibility in October
Onset, MA

Average visibility in October - Onset, 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).

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Onset, Massachusetts, USA

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