January weather forecast
Harmonsburg, PA

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Weather in January

January, the same as December, in Harmonsburg, Pennsylvania, is another subzero cold winter month, with temperature in the range of an average low of 18.9°F (-7.3°C) and an average high of 30.4°F (-0.9°C).

Temperature

The month of January sees the lowest average temperatures, reaching 30.4°F (-0.9°C) at the peak and 18.9°F (-7.3°C) at the low.

Humidity

In Harmonsburg, the average relative humidity in January is 88%.

Rainfall

In Harmonsburg, in January, during 7.6 rainfall days, 1.81" (46mm) of precipitation is typically accumulated. Throughout the year, there are 167.5 rainfall days, and 24.29" (617mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in Harmonsburg. The month with the most snowfall in Harmonsburg is January, when snow falls for 20.7 days and typically aggregates up to 6.42" (163mm) of snow.

Daylight

In Harmonsburg, the average length of the day in January is 9h and 34min.
On the first day of the month, sunrise is at 7:48 am and sunset at 5:01 pm. On the last day of January, in Harmonsburg, sunrise is at 7:34 am and sunset at 5:34 pm EST.

Sunshine

With an average of 2.4h of sunshine, January has the least sunshine of the year in Harmonsburg.

UV index

In Harmonsburg, the average daily maximum UV index in January is 2. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index, 2 in January, converts into the following recommendations:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. When the Sun is at its strongest around midday, find shade and limit exposure. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
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Frequently asked questions

What is the coldest month in Harmonsburg?

January, recording an average high temperature of 30.4°F (-0.9°C) and a low temperature of 18.9°F (-7.3°C), is Harmonsburg's coldest month.

How cold is January in Harmonsburg?

Harmonsburg in January has an average high-temperature of 30.4°F (-0.9°C) and an average low-temperature of 18.9°F (-7.3°C).

What is the average humidity in January in Harmonsburg?

In Harmonsburg, Pennsylvania, the average relative humidity in January is 88%.

How much does it rain in Harmonsburg in January?

In January, in Harmonsburg, the rain falls for 7.6 days. Throughout January, 1.81" (46mm) of precipitation is accumulated.

What is the snowiest month in Harmonsburg?

January is the month with the most snowfall in Harmonsburg, Pennsylvania. Snow falls for 20.7 days and accumulates 6.42" (163mm) of snow.

How much does it snow in Harmonsburg in January?

In January, in Harmonsburg, Pennsylvania, it is snowing for 20.7 days. Throughout January, 6.42" (163mm) of snow is accumulated.

How many hours of daylight does Harmonsburg have in January?

In Harmonsburg, the average day length in January is 9h and 34min.

What time are sunrise and sunset in January in Harmonsburg?

In January, on the first day of the month, sunrise is at 7:48 am and sunset at 5:01 pm. On the last day of the month, in Harmonsburg, sunrise is at 7:34 am and sunset at 5:34 pm EST.

What is the month with the least sunshine in Harmonsburg?

The month with the least sunshine in Harmonsburg, Pennsylvania, is January, with an average of 2.4h of sunshine.

How long on average sun shines in January in Harmonsburg?

In Harmonsburg, Pennsylvania, the average sunshine duration in January is 2.4h.

What is the UV index intensity in January in Harmonsburg?

The average daily maximum UV index in January in Harmonsburg is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health from unsafe exposure to Sun's UV rays.
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 January
Harmonsburg, PA

Average temperature in January - Harmonsburg, PA
  • Average high temperature in January: 30.4°F

The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (30.4°F).

  • Average low temperature in January: 18.9°F

The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).

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Average pressure in January
Harmonsburg, PA

Average pressure in January - Harmonsburg, PA
  • Average pressure in January: 30.09"Hg

The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in January
Harmonsburg, PA

Average wind speed in January - Harmonsburg, PA
  • Average wind speed in January: 9.2mph

The windiest month (with the highest average wind speed) is January (9.2mph).
The calmest month (with the lowest average wind speed) is July (5.7mph).

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Average humidity in January
Harmonsburg, PA

Average humidity in January - Harmonsburg, PA
  • Average humidity in January: 88%

The month with the highest relative humidity is February (89%).
The months with the lowest relative humidity are April, May, June, July and August (80%).

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Average rainfall in January
Harmonsburg, PA

Average rainfall in January - Harmonsburg, PA
  • Average rainfall in January: 1.81"

The wettest month (with the highest rainfall) is June (2.72").
The driest month (with the least rainfall) is November (1.42").

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Average rainfall days in January
Harmonsburg, PA

Average rainfall days in January - Harmonsburg, PA
  • Average rainfall days in January: 7.6 days

The month with the highest number of rainy days is October (17.5 days).
The month with the least rainy days is January (7.6 days).

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Average snowfall in January
Harmonsburg, PA

Average snowfall in January - Harmonsburg, PA
  • Average snowfall in January: 6.42"

The month with the highest snowfall is January (6.42").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Harmonsburg, PA

Average snowfall days in January - Harmonsburg, PA
  • Average snowfall days in January: 20.7 days

The month with the highest number of snowfall days is January (20.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in January /
Average sunshine in January
Harmonsburg, PA

Average daylight in January / Average sunshine in January - Harmonsburg, PA
  • Average daylight in January: 9h and 4min

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 January: 2h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).

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Average sunshine days in January
Harmonsburg, PA

Average sunshine days in January - Harmonsburg, PA
  • Average sunshine days in January: 6.8 days

The month with the most sunshine days is July (12.5 days).
The month with the least sunshine days is February (6.7 days).

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Average UV index in January
Harmonsburg, PA

Average UV index in January - Harmonsburg, PA
  • Average UV index in January: 2

The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in January
Harmonsburg, PA

Average cloud cover in January - Harmonsburg, PA
  • Average cloud cover in January: 76

The month with the most cloud cover is January (Cloud cover 76).
The months with the least cloud cover are July and August (Cloud cover 32).

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Average visibility in January
Harmonsburg, PA

Average visibility in January - Harmonsburg, PA
  • Average visibility in January: 4mi

The months with the highest visibility are April, August, September, October and November (6mi).
The months with the lowest visibility are January and February (4mi).

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Harmonsburg, Pennsylvania, USA

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