Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
January, with average temperatures reaching a high of 33.6°F (0.9°C) and a low of 21.2°F (-6°C), is the coldest month.Humidity
In Jonestown, the average relative humidity in January is 78%.Rainfall
In Jonestown, in January, during 9.1 rainfall days, 2.52" (64mm) of precipitation is typically accumulated. In Jonestown, during the entire year, the rain falls for 166.3 days and collects up to 34.53" (877mm) of precipitation.Snowfall
Months with snowfall in Jonestown are January through May, October through December. The month with the most snowfall in Jonestown is January, when snow falls for 10.1 days and typically aggregates up to 5.08" (129mm) of snow.Daylight
The average length of the day in January is 9h and 41min.On the first day of January, sunrise is at 7:28 am and sunset at 4:49 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 5:22 pm EST.
Sunshine
In Jonestown, Pennsylvania, the average sunshine in January is 4.4h.UV index
The months with the lowest UV index in Jonestown, Pennsylvania, are January through March, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: An average maximum UV index of 2 in January leads to these recommendations:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Frequently asked questions
What is the coldest time of year in Jonestown?
How cold is January in Jonestown?
What is the average humidity in January in Jonestown?
How much does it rain in Jonestown in January?
When does it snow the most in Jonestown?
How much does it snow in Jonestown in January?
What is the average length of the day in January in Jonestown?
When are sunrise and sunset in January in Jonestown?
How many hours of sunshine does Jonestown have in January?
What is the month with the lowest UV index in Jonestown?
What is the UV index intensity in January in Jonestown?
Average temperature in January
Jonestown, PA
- Average high temperature in January: 33.6°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.6°F).
- Average low temperature in January: 21.2°F
The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).
Average pressure in January
Jonestown, PA
- Average pressure in January: 30.09"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 January
Jonestown, PA
- Average wind speed in January: 8.3mph
The windiest month (with the highest average wind speed) is March (8.7mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in January
Jonestown, PA
- Average humidity in January: 78%
The months with the highest relative humidity are February, May, June and October (81%).
The month with the lowest relative humidity is April (76%).
Average rainfall in January
Jonestown, PA
- Average rainfall in January: 2.52"
The wettest months (with the highest rainfall) are May and July (3.58").
The driest month (with the least rainfall) is September (2.32").
Average rainfall days in January
Jonestown, PA
- Average rainfall days in January: 9.1 days
The month with the highest number of rainy days is May (18.6 days).
The month with the least rainy days is January (9.1 days).
Average snowfall in January
Jonestown, PA
- Average snowfall in January: 5.08"
The month with the highest snowfall is January (5.08").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Jonestown, PA
- Average snowfall days in January: 10.1 days
The month with the highest number of snowfall days is January (10.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Jonestown, PA
- Average daylight in January: 9h and 4min
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 18min).
- Average sunshine in January: 4h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days in January
Jonestown, PA
- Average sunshine days in January: 14.7 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is May (10.1 days).
Average UV index in January
Jonestown, PA
- Average UV index in January: 2
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in January
Jonestown, PA
- Average cloud cover in January: 51
The months with the most cloud cover are February and December (Cloud cover 53).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in January
Jonestown, PA
- Average visibility in January: 5mi
The months with the highest visibility are March, April, June, July and November (6mi).
The months with the lowest visibility are January, February, May, August, September, October and December (5mi).
Jonestown, Pennsylvania, USA
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