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
Entering January, Hamilton's average high-temperature reads a still cold 42.1°F (5.6°C), indicating a close resemblance to the previous month's climate. Hamilton sustains an average of approximately a still icy 33.6°F (0.9°C) during January nights, with little variation from daytime highs.Humidity
The months with the highest humidity in Hamilton are January through March, with an average relative humidity of 86%.Rainfall
In Hamilton, during January, the rain falls for 18.8 days and regularly aggregates up to 6.54" (166mm) of precipitation. Throughout the year, there are 203.2 rainfall days, and 49.72" (1263mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. In Hamilton, in January, during 2.6 snowfall days, 3.62" (92mm) of snow is typically accumulated. Throughout the year, there are 12 snowfall days, and 12.32" (313mm) of snow is accumulated.Daylight
In January, the average length of the day in Hamilton is 8h and 51min.On the first day of the month, sunrise is at 7:59 am and sunset at 4:23 pm. On the last day of January, in Hamilton, sunrise is at 7:38 am and sunset at 5:04 pm PST.
Sunshine
The average sunshine in January is 3.8h.UV index
The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The daily maximum UV index of 2 in January interprets into the following advice:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is January cold in Hamilton?
What is the most humid month in Hamilton?
What is the average humidity in January in Hamilton?
How much does it rain in Hamilton in January?
How much does it snow in Hamilton in January?
How many hours of daylight does Hamilton have in January?
When is the sunrise / sunset in January in Hamilton?
How many hours of sunshine does Hamilton have in January?
When is the lowest UV index in Hamilton?
What is the UV index reading in January in Hamilton?
Average temperature in January
Hamilton, WA
- Average high temperature in January: 42.1°F
The warmest month (with the highest average high temperature) is July (70.9°F).
The month with the lowest average high temperature is December (40.5°F).
- Average low temperature in January: 33.6°F
The month with the highest average low temperature is August (50.5°F).
The coldest months (with the lowest average low temperature) are February and December (32.5°F).
Average pressure in January
Hamilton, WA
- Average pressure in January: 30.09"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed in January
Hamilton, WA
- Average wind speed in January: 5.5mph
The windiest month (with the highest average wind speed) is November (5.7mph).
The calmest month (with the lowest average wind speed) is August (3.3mph).
Average humidity in January
Hamilton, WA
- Average humidity in January: 86%
The months with the highest relative humidity are January, February and March (86%).
The month with the lowest relative humidity is July (75%).
Average rainfall in January
Hamilton, WA
- Average rainfall in January: 6.54"
The wettest month (with the highest rainfall) is November (7.09").
The driest month (with the least rainfall) is July (0.98").
Average rainfall days in January
Hamilton, WA
- Average rainfall days in January: 18.8 days
The month with the highest number of rainy days is March (22.1 days).
The month with the least rainy days is August (9.4 days).
Average snowfall in January
Hamilton, WA
- Average snowfall in January: 3.62"
The month with the highest snowfall is February (4.96").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Hamilton, WA
- Average snowfall days in January: 2.6 days
The month with the highest number of snowfall days is February (4.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Hamilton, WA
- Average daylight in January: 8h and 5min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in January: 3h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 3h and 30min).
Average sunshine days in January
Hamilton, WA
- Average sunshine days in January: 9.9 days
The month with the most sunshine days is August (19.2 days).
The month with the least sunshine days is March (7.3 days).
Average UV index in January
Hamilton, WA
- Average UV index in January: 2
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in January
Hamilton, WA
- Average cloud cover in January: 60
The month with the most cloud cover is December (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in January
Hamilton, WA
- Average visibility in January: 5mi
The months with the highest visibility are June, July and August (6mi).
The months with the lowest visibility are January, February, March, April, May, September, October, November and December (5mi).
Hamilton, Washington, USA
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