Temperatures in January
It's warm in January in Portland with an average temperature of 24°C. Temperatures this month range from a low of 24°C to a high of 25°C. At night, you can expect temperatures between 16°C and 18°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Portland in January. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of January
The month of January starts in Portland with warm temperatures, averaging around 25°C during the day and nights close to 17°C. You can expect regular precipitation, but there’s also a chance for some sunny days in the first days of the month.
Mid-January
By mid-January, the average daytime temperature stays the same at 25°C, with nights close to 17°C. There might be a few showers during this period, but plenty of dry days with sunshine too.
End of January
By the end of January, the average daytime temperature in Portland will be around 25°C, with nights close to 18°C. There’s regular precipitation, but with a bit of luck, you’ll also get some dry and sunny days.
Precipitation in January
In January, there is an average of 90 mm of precipitation, spread over 8 days. The wind speed is around 4 Bft, mostly coming from the South.
The average precipitation chance is 27% per day this month. Though it seems pretty low, the weather’s variable. Some days have higher and others lower precipitation chances, which lowers the average.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in January for Portland. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
Portland in January |
London | ||
|---|---|---|---|
 Average Temperature |
24°C | 8°C | |
 High Temp |
25°C | 9°C | |
| Low Temp |
24°C | 6°C | |
 Total Precipitation |
90 mm | 58 mm | |
| Rainy Days |
8 days | 9 days | |
December
UV index
The UV index is a maximum of 9 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is January a good time to visit Portland?
Want nice weather? Then January is a great time to be in Portland. You’ll have pleasant temperatures and not too much rain this month.
Temperature records for Portland in January
With 30°C, Portland hit the highest temperature in the last 10 years in January 2019. The lowest daytime temperature in this month was 18°C in 2016. The extreme night temperatures ranged from a low of 5°C to a high of 21°C.
Check out the climate of Portland for all months and discover the best travel time
Daily Temperature in January in Portland
This chart shows the average daily temperatures, both day and night, for each day in January in Portland, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in January in Portland
The chart below shows the average daily precipitation in January for Portland, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for January, you can expect around 8 days of rain in Portland.
Daily UV Index in January in Portland
This chart shows the average daily UV index in January in Portland, 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.
Temperature in January in Portland Over the Years
This chart shows the average temperature in January in Portland, measured in degrees Celsius, over the past years.
Total Precipitation in January in Portland Over the Years
This chart shows the average precipitation in January in Portland, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in January for Portland
Click on a specific day in January for detailed info on the typical weather on that day in Portland. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in January in Portland
Have you been to Portland in January?
Share your weather experience in January in Portland.
Average Weather in Portland by Month
Click on a month below to see detailed weather info for Portland. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
