December weather forecast
Hamilton, PA

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Weather in December

December, the first month of the winter in Hamilton, is also a wintry month, with temperature in the range of an average low of 25.7°F (-3.5°C) and an average high of 36.7°F (2.6°C).

Temperature

December's arrival coincides with a drop in the average high-temperature, decreasing from November's chilly 46.2°F (7.9°C) to a wintry 36.7°F (2.6°C). Hamilton experiences an average low-temperature of 25.7°F (-3.5°C) in month of December.

Humidity

In Hamilton, the average relative humidity in December is 86%.

Rainfall

In Hamilton, in December, during 10.5 rainfall days, 1.73" (44mm) of precipitation is typically accumulated. In Hamilton, during the entire year, the rain falls for 151.9 days and collects up to 22.13" (562mm) of precipitation.

Snowfall

Months with snowfall in Hamilton are January through May, October through December. In December, in Hamilton, it is snowing for 14.6 days. Throughout December, 4.21" (107mm) of snow is accumulated. Throughout the year, in Hamilton, there are 71 snowfall days, and 22.32" (567mm) of snow is accumulated.

Daylight

The month with the shortest days in Hamilton is December, with an average of 9h and 18min of daylight.
On the first day of December, sunrise is at 7:22 am and sunset at 4:48 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 4:58 pm EST.

Sunshine

The average sunshine in December in Hamilton, Pennsylvania, is 2.6h.

UV index

The month with the lowest UV index in Hamilton, Pennsylvania, is December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A maximum high UV index of 1 in December translates into the following recommendations:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. To guard against the harmful effects of the Sun, minimize exposure during midday. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
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Frequently asked questions

How cold is December in Hamilton?

During December, Hamilton experiences an average high-temperature of 36.7°F (2.6°C) and a low-temperature of 25.7°F (-3.5°C). In July, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines relative humidity and air temperature, is calculated to be 86°F (30°C).

What is the average humidity in December in Hamilton?

The average relative humidity in December is 86%.

How many days does it rain in December in Hamilton?

In December, in Hamilton, Pennsylvania, the rain falls for 10.5 days. Throughout December, 1.73" (44mm) of precipitation is accumulated.

How much does it snow in Hamilton in December?

In Hamilton, during December, snow falls for 14.6 days and regularly aggregates up to 4.21" (107mm) of snow.

What is the month with the shortest days in Hamilton?

December has the shortest days of the year in Hamilton, Pennsylvania, with an average of 9h and 18min of daylight.

How many hours of daylight does Hamilton have in December?

In December, the average day length is 9h and 17min.

When are sunrise and sunset in December in Hamilton?

In December, on the first day of the month, sunrise is at 7:22 am and sunset at 4:48 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 4:58 pm EST.

How many hours of sunshine does Hamilton have in December?

In Hamilton, the average sunshine duration in December is 2.6h.

What is the month with the lowest UV index in Hamilton?

With an average maximum UV index of 1, December is the month with the lowest UV index in Hamilton, Pennsylvania.

What is the UV index intensity in December in Hamilton?

In Hamilton, Pennsylvania, the average daily maximum UV index in December is 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Hamilton, PA

Average temperature in December - Hamilton, PA
  • Average high temperature in December: 36.7°F

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (30.4°F).

  • Average low temperature in December: 25.7°F

The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).

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Average pressure in December
Hamilton, PA

Average pressure in December - Hamilton, PA
  • Average pressure in December: 30.1"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

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Average wind speed in December
Hamilton, PA

Average wind speed in December - Hamilton, PA
  • Average wind speed in December: 8.6mph

The windiest month (with the highest average wind speed) is January (9.1mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

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Average humidity in December
Hamilton, PA

Average humidity in December - Hamilton, PA
  • Average humidity in December: 86%

The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are June, July and August (78%).

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Average rainfall in December
Hamilton, PA

Average rainfall in December - Hamilton, PA
  • Average rainfall in December: 1.73"

The wettest month (with the highest rainfall) is April (2.48").
The driest month (with the least rainfall) is November (1.26").

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Average rainfall days in December
Hamilton, PA

Average rainfall days in December - Hamilton, PA
  • Average rainfall days in December: 10.5 days

The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is January (7.8 days).

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Average snowfall in December
Hamilton, PA

Average snowfall in December - Hamilton, PA
  • Average snowfall in December: 4.21"

The month with the highest snowfall is January (5.63").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Hamilton, PA

Average snowfall days in December - Hamilton, PA
  • Average snowfall days in December: 14.6 days

The month with the highest number of snowfall days is January (18.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
Hamilton, PA

Average daylight in December / Average sunshine in December - Hamilton, PA
  • Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in December: 2h and 4min

The months with the most sunshine are July and August (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).

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Average sunshine days in December
Hamilton, PA

Average sunshine days in December - Hamilton, PA
  • Average sunshine days in December: 9.2 days

The month with the most sunshine days is September (15.3 days).
The month with the least sunshine days is February (7.8 days).

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Average UV index in December
Hamilton, PA

Average UV index in December - Hamilton, PA
  • Average UV index in December: 1

The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in December
Hamilton, PA

Average cloud cover in December - Hamilton, PA
  • Average cloud cover in December: 72

The month with the most cloud cover is January (Cloud cover 75).
The month with the least cloud cover is August (Cloud cover 39).

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Average visibility in December
Hamilton, PA

Average visibility in December - Hamilton, PA
  • Average visibility in December: 5mi

The month with the highest visibility is April (6mi).
The months with the lowest visibility are January and February (4mi).

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Hamilton, Pennsylvania, USA

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