January weather forecastRock Stream, NY
January
Weather in January
January, like December, is another subzero cold winter month in Rock Stream, New York, with an average temperature varying between 17.1°F (-8.3°C) and 28.4°F (-2°C).Temperature
Rock Stream's coldest temperatures are experienced in January, with average high temperatures of 28.4°F (-2°C) and lows of 17.1°F (-8.3°C).Humidity
In Rock Stream, the average relative humidity in January is 84%.Rainfall
January is the month with the least rainfall in Rock Stream. Rain falls for 8.9 days and accumulates 1.89" (48mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Rock Stream, in January, snow falls for 19.2 days, with typically accumulated 7.13" (181mm) of snow. Throughout the year, in Rock Stream, New York, there are 84 snowfall days, and 38.7" (983mm) of snow is accumulated.Daylight
In Rock Stream, the average length of the day in January is 9h and 29min.On the first day of the month, sunrise is at 7:37 am and sunset at 4:45 pm. On the last day of January, in Rock Stream, sunrise is at 7:22 am and sunset at 5:19 pm EST.
Sunshine
In Rock Stream, New York, the average sunshine in January is 3h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The UV index of 1 in January translates into these instructions:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Rock Stream, NY
- Average high temperature in January: 28.4°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 (28.4°F).
- Average low temperature in January: 17.1°F
The month with the highest average low temperature is July (58.3°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure in January
Rock Stream, NY
- Average pressure in January: 30.06"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).
Average wind speed in January
Rock Stream, NY
- Average wind speed in January: 9.6mph
The windiest month (with the highest average wind speed) is January (9.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).
Average humidity in January
Rock Stream, NY
- Average humidity in January: 84%
The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are April, May and July (78%).
Average rainfall in January
Rock Stream, NY
- Average rainfall in January: 1.89"
The wettest month (with the highest rainfall) is October (3.07").
The driest month (with the least rainfall) is January (1.89").
Average rainfall days in January
Rock Stream, NY
- Average rainfall days in January: 8.9 days
The month with the highest number of rainy days is July (18.7 days).
The month with the least rainy days is February (8.1 days).
Average snowfall in January
Rock Stream, NY
- Average snowfall in January: 7.13"
The month with the highest snowfall is February (9.02").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Rock Stream, NY
- Average snowfall days in January: 19.2 days
The month with the highest number of snowfall days is January (19.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Rock Stream, NY
- Average daylight in January: 9h and 30min
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 6min).
- Average sunshine in January: 3h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 2h and 54min).
Average sunshine days in January
Rock Stream, NY
- Average sunshine days in January: 7.9 days
The month with the most sunshine days is September (15 days).
The month with the least sunshine days is February (6.9 days).
Average UV index in January
Rock Stream, NY
- Average UV index in January: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in January
Rock Stream, NY
- Average cloud cover in January: 70
The month with the most cloud cover is February (Cloud cover 71).
The months with the least cloud cover are July and August (Cloud cover 36).
Average visibility in January
Rock Stream, NY
- Average visibility in January: 5mi
The month with the highest visibility is June (6mi).
The months with the lowest visibility are January, February, March, April, May, July, August, September, October, November and December (5mi).
