October weather forecast
Saint Peters, PA

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Weather in October

October, like September, in Saint Peters, Pennsylvania, is another refreshing autumn month, with an average temperature ranging between max 63°F (17.2°C) and min 46.9°F (8.3°C).

Temperature

During the transition into October, Saint Peters observes a decrease in the average high-temperature, falling from a warm 75°F (23.9°C) in September to a comfortable 63°F (17.2°C). During October, Saint Peters records an average temperature of 46.9°F (8.3°C) at night.

Humidity

The months with the highest humidity are February and October, with an average relative humidity of 81%.

Rainfall

In Saint Peters, in October, during 13.1 rainfall days, 2.4" (61mm) of precipitation is typically accumulated. Throughout the year, there are 162.2 rainfall days, and 27.87" (708mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. October is the first month it typically snows. Throughout October, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. In Saint Peters, during the entire year, snow falls for 22.9 days and aggregates up to 10.35" (263mm) of snow.

Daylight

In October, the average length of the day is 11h and 8min.
On the first day of the month, sunrise is at 6:59 am and sunset at 6:44 pm. On the last day of October, sunrise is at 7:31 am and sunset at 6:01 pm EDT.

Sunshine

In October, the average sunshine is 5.5h.

UV index

In October, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: During October, 3 as the daily maximum UV index converts into the following advice:
Adopt protective measures - Suggestions to resist sunburn are offered. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.

Frequently asked questions

What is the usual temperature for Saint Peters in October?

In October, the average high-temperature and low-temperature are 63°F (17.2°C) and 46.9°F (8.3°C) respectively. The average heat index (a.k.a. 'real feel', 'feels like'), which represents the influence of relative humidity on air temperature, in August is estimated at 86°F (30°C).

What is the most humid month?

February and October, with an average relative humidity of 81%, are most humid months.

What is the average humidity in October?

In October, the average relative humidity is 81%.

How many days does it rain in October?

In October, the rain falls for 13.1 days. Throughout October, 2.4" (61mm) of precipitation is accumulated.

When does it start to snow?

October is the first month it typically snows. Throughout October, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow.

How many hours of daylight does Saint Peters have in October?

The average day length in October is 11h and 8min.

When are sunrise and sunset in October?

In October, on the first day of the month, sunrise is at 6:59 am and sunset at 6:44 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 6:01 pm EDT.

How long on average sun shines in October?

The average sunshine duration in October is 5.5h.

What is the UV index reading in October?

In Saint Peters, the average daily maximum UV index in October is 3. A UV Index reading of 3 to 5 represents a moderate health threat from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Saint Peters, PA

Average temperature in October - Saint Peters, PA
  • Average high temperature in October: 63°F

The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (35.2°F).

  • Average low temperature in October: 46.9°F

The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).

Average pressure in October
Saint Peters, PA

Average pressure in October - Saint Peters, PA
  • Average pressure in October: 30.03"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in October
Saint Peters, PA

Average wind speed in October - Saint Peters, PA
  • Average wind speed in October: 6.7mph

The windiest months (with the highest average wind speed) are January and March (8.3mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in October
Saint Peters, PA

Average humidity in October - Saint Peters, PA
  • Average humidity in October: 81%

The months with the highest relative humidity are February and October (81%).
The month with the lowest relative humidity is April (76%).

Average rainfall in October
Saint Peters, PA

Average rainfall in October - Saint Peters, PA
  • Average rainfall in October: 2.4"

The wettest month (with the highest rainfall) is August (2.83").
The driest month (with the least rainfall) is September (1.77").

Average rainfall days in October
Saint Peters, PA

Average rainfall days in October - Saint Peters, PA
  • Average rainfall days in October: 13.1 days

The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (9.4 days).

Average snowfall in October
Saint Peters, PA

Average snowfall in October - Saint Peters, PA
  • Average snowfall in October: 0.04"

The month with the highest snowfall is March (3.03").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in October
Saint Peters, PA

Average snowfall days in October - Saint Peters, PA
  • Average snowfall days in October: 0.1 days

The month with the highest number of snowfall days is January (7.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in October /
Average sunshine in October
Saint Peters, PA

Average daylight in October / Average sunshine in October - Saint Peters, PA
  • Average daylight in October: 11h and 1min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in October: 5h and 3min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

Average sunshine days in October
Saint Peters, PA

Average sunshine days in October - Saint Peters, PA
  • Average sunshine days in October: 15.4 days

The month with the most sunshine days is November (17.8 days).
The month with the least sunshine days is May (11.6 days).

Average UV index in October
Saint Peters, PA

Average UV index in October - Saint Peters, PA
  • Average UV index in October: 3

The months with the highest UV index are May, June and July (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
Saint Peters, PA

Average cloud cover in October - Saint Peters, PA
  • Average cloud cover in October: 42

The months with the most cloud cover are February and December (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 31).

Average visibility in October
Saint Peters, PA

Average visibility in October - Saint Peters, PA
  • Average visibility in October: 5mi

The months with the highest visibility are January, March, April, June, July, August, November and December (6mi).
The months with the lowest visibility are February, May, September and October (5mi).

Saint Peters, Pennsylvania, USA

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