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United StatesThe weather in January in Mercer Island
It's cool in January in Mercer Island with an average temperature of 10°C. Temperatures this month range from a low of 7°C to a high of 12°C. At night, you can expect temperatures between 1°C and 6°C.
Looking for sun? January isn’t a good month to be in Mercer Island. There’s too much chance of rain this month.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in January for Mercer Island, Washington. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Precipitation and snowfall
In January, there is an average of 196 mm of precipitation, spread over 20 days. Of the total precipitation, about 1,3 cm falls as snow in January. The wind speed is around 3 Bft, mostly coming from the South.
Daily weather in January for Mercer Island
Click on any day in January to get detailed info about the usual weather on that day in Mercer Island. Check out the historical temperatures and precipitation over the past 10 years on this day.
January weather comparison
| Mercer Island | New York | |
|---|---|---|
| Average temperature | 10°C | 5°C |
| Max. temperature | 12°C | 11°C |
| Min. temperature | 1°C | -5°C |
| Total precipitation | 196 mm | 97 mm |
| Rainy days | 20 days | 12 days |
| Total snowfall | 1,3 cm | 16 cm |
| Snowy days | 1 day | 8 days |
Start of January
The month of January starts in Mercer Island with cold temps, averaging around 9°C during the day and nights around 4°C.
Mid January
By mid-January, daytime temps rise to around 11°C, with nights around 5°C. During this part of the month, you might see regular precipitation, but there will also be some sunny days.
End of January
By the end of January, the average daytime temperature in Mercer Island is around 10°C, while nighttime temps are about 5°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days.
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UV index
The UV index is a maximum of 2 this month. That's a low value on the intensity scale of 1 to 11. The risk of sunburn is minimal at this time.
Check out the climate of Mercer Island for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in January in Mercer Island, Washington. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in January in Mercer Island
Temperature in January in Mercer Island over the years
Precipitation charts
These charts show the average amount of precipitation in January in Mercer Island, Washington. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in January in Mercer Island
Total precipitation in January in Mercer Island over the years
Daily Snowfall in January in Mercer Island
Snowfall in January in Mercer Island per year
Daily UV index in January in Mercer Island
This chart shows the average daily UV index in January in Mercer Island, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in January in Mercer Island
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Average weather in Mercer Island by month
Click on a month below to see detailed weather info for Mercer Island. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.