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 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
Arrival of October comes with a reduction in the average high-temperature, falling from a moderately hot 78.4°F (25.8°C) in September to a comfortable 65.3°F (18.5°C). Throughout October, Portsmouth anticipates an average low-temperature of 46.8°F (8.2°C).Humidity
In Portsmouth, Ohio, the average relative humidity in October is 76%.Rainfall
In October, the rain falls for 13 days. Throughout October, 2.17" (55mm) of precipitation is accumulated. Throughout the year, in Portsmouth, there are 170.4 rainfall days, and 31.02" (788mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. October is the first month it typically snows. Throughout October, in the average 0.2 snowfall days, it receives 0.12" (3mm) of snow. In Portsmouth, Ohio, during the entire year, snow falls for 36.7 days and aggregates up to 11.57" (294mm) of snow.Daylight
In Portsmouth, Ohio, the average length of the day in October is 11h and 10min.On the first day of October, sunrise is at 7:28 am and sunset at 7:14 pm. On the last day of the month, sunrise is at 7:58 am and sunset at 6:32 pm EDT.
Sunshine
In October, the average sunshine is 6.4h.UV index
The average daily maximum UV index in October is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: In October, a daily maximum UV index of 3 leads to the following instructions:
Be vigilant - A duty to shield skin and eyes from injury exists. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Frequently asked questions
What are October temperatures in Portsmouth?
What is the average humidity in October in Portsmouth?
How much does it rain in Portsmouth in October?
When does it start snowing in Portsmouth?
How many hours of daylight does Portsmouth have in October?
What time are sunrise and sunset in October in Portsmouth?
How long on average sun shines in October in Portsmouth?
What is the UV index intensity in October in Portsmouth?
Average temperature in October
Portsmouth, OH
- Average high temperature in October: 65.3°F
The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is January (37.8°F).
- Average low temperature in October: 46.8°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in October
Portsmouth, OH
- Average pressure in October: 30.05"Hg
The months with the highest atmospheric pressure are January and November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in October
Portsmouth, OH
- Average wind speed in October: 6mph
The windiest months (with the highest average wind speed) are January and February (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in October
Portsmouth, OH
- Average humidity in October: 76%
The months with the highest relative humidity are February and December (81%).
The month with the lowest relative humidity is August (75%).
Average rainfall in October
Portsmouth, OH
- Average rainfall in October: 2.17"
The wettest month (with the highest rainfall) is May (3.19").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days in October
Portsmouth, OH
- Average rainfall days in October: 13 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is November (10.5 days).
Average snowfall in October
Portsmouth, OH
- Average snowfall in October: 0.12"
The month with the highest snowfall is January (3.19").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in October
Portsmouth, OH
- Average snowfall days in October: 0.2 days
The month with the highest number of snowfall days is January (10.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in October /
Average sunshine in October
Portsmouth, OH
- Average daylight in October: 11h and 1min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in October: 6h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in October
Portsmouth, OH
- Average sunshine days in October: 16.5 days
The month with the most sunshine days is November (17.3 days).
The month with the least sunshine days is February (10 days).
Average UV index in October
Portsmouth, OH
- 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).
Average cloud cover in October
Portsmouth, OH
- Average cloud cover in October: 39
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in October
Portsmouth, OH
- Average visibility in October: 6mi
The months with the highest visibility are March, April, June, October and November (6mi).
The months with the lowest visibility are January, February, May, July, August, September and December (5mi).
Portsmouth, Ohio, USA
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