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Contents
- The climate of Eugene
- The best time to visit Eugene
- The worst time to visit Eugene
- Spring weather in Eugene
- Summer weather in Eugene
- Autumn weather in Eugene
- Winter weather in Eugene
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Bright neon lights light up the colorful city of Eugene in Oregon,
The climate of Eugene
Eugene, Oregon, nestled on the Willamette River, thrives within the Mediterranean climate zone, characterized by its warm summers and attributable to the Köppen climate classification Csb. The prevailing climate supports a diverse array of flora and fauna.
Over the course of twelve months, average high temperatures range from 46.2°F (7.9°C) in deepest winter to a warm 80.1 to 81.3°F (27.4°C) in mid-summer. The sharp contrast between winter lows of 33.8°F (1°C) and summer highs illustrates the dynamic and often unpredictable weather in this region. The shift in average low temperatures follows a similar pattern, bottoming out at a chilly 33.8°F (1°C) in winter before ascending to a cool 49.6°F (9.8°C) in summer.
Precipitation varies throughout the year, with a conspicuous dry period from June through August, where monthly averages dip to a mere 0.08 to 0.16" (4mm). This is in stark contrast to the rest of the year, particularly from October to March, when the area sees consistent and ample rainfall, notably peaking in December at 1.54" (39mm).
Despite the variations in temperature and rainfall, relative humidity remains relatively stable year-round, hovering between 68% in the dry summer months and 86% at other times.
Over the course of twelve months, average high temperatures range from 46.2°F (7.9°C) in deepest winter to a warm 80.1 to 81.3°F (27.4°C) in mid-summer. The sharp contrast between winter lows of 33.8°F (1°C) and summer highs illustrates the dynamic and often unpredictable weather in this region. The shift in average low temperatures follows a similar pattern, bottoming out at a chilly 33.8°F (1°C) in winter before ascending to a cool 49.6°F (9.8°C) in summer.
Precipitation varies throughout the year, with a conspicuous dry period from June through August, where monthly averages dip to a mere 0.08 to 0.16" (4mm). This is in stark contrast to the rest of the year, particularly from October to March, when the area sees consistent and ample rainfall, notably peaking in December at 1.54" (39mm).
Despite the variations in temperature and rainfall, relative humidity remains relatively stable year-round, hovering between 68% in the dry summer months and 86% at other times.
The best time to visit Eugene
The optimum time to visit Eugene extends from June to September. In this period, temperatures lie between 65.8°F (18.8°C) to a warm 81.3°F (27.4°C), coupled with minimal rainfall. This span of months witnesses the maximum daily sunshine, spanning 9 to 10.9 hours, fostering optimum conditions for outdoor activities. UV index levels rise to an average of 5 to 6, so sunscreen and protective clothing are recommended for anyone spending extended periods outside during this phase of the year.
The worst time to visit Eugene
Those adverse to colder climates might want to avoid Eugene between December and February. The winter months here are characterized by lower temperatures, from 33.8°F (1°C) rising to no more than 49.6°F (9.8°C), with relative humidity lingering around 86%. These months also bear witness to the heaviest rainfall of the year, which goes up to 1.54" (39mm) in December. Sunshine averages just 4.2 to 4.3 hours a day, which is noticeably less than the rest of the year.
Spring weather in Eugene
Spring introduces a warming trend in Eugene with average high temperatures ascending from 53.2°F (11.8°C) in March to 65.8°F (18.8°C) by May. Rainfall during the spring months oscillates between 1.1" (28mm) to 0.75" (19mm), a significant decrease compared to the winter months. The length of daylight extends to 13.5 to 14.8 hours, while daily sunshine averages jump from 5.4 to 8.2 hours.
Summer weather in Eugene
The summer season in Eugene is dominated by pleasant temperatures ranging from 65.8°F (18.8°C) in June soaring up to 81.3°F (27.4°C) in August. Rainfall is at its lowest in summer, with an average of just 0.08" (2mm) in July, making these days notably drier than the rest of the year. Sunshine dominates, with an average of 10.9 to 11 hours daily, while daylight hours peak at around 15.1 to 15.4 hours.
Autumn weather in Eugene
Autumn in Eugene showcases a drop in temperatures from a high of 73.9°F (23.3°C) in September to a cooler 52.7°F (11.5°C) by November. Rainfall increases during the autumn months, from a mere 0.51" (13mm) in September to 1.1" (28mm) towards November. Sunshine hours are reduced to 9.2 to 5.4 hours per day, signalling the approach of winter.
Winter weather in Eugene
Winter months are the coldest in Eugene with average low temperatures dropping to 33.8°F (1°C) in December and average highs around 49.6°F (9.8°C) in February. Precipitation levels are significantly higher during the winter, peaking at 1.54" (39mm) in December. Daylight hours are reduced to their yearly low of 8.9 to 9.6 hours, while sunshine averages dwindle down to 4.2 to 4.3 hours per day.
Weather in January
The weather in January in Eugene, Oregon is characterized by chilly temperatures and high levels of humidity, signs of a true winter month. Despite the frosty temperatures, Eugene experiences mild snowfall with just 0.39" (10mm) on an average. Weather in January »
Weather in February
February continues the winter trend seen in January, but with slightly warmer temperatures and an increase in snowfall to 1.5" (38mm). The change attributed to climate transition is most noticeable in the lengthening daylight hours, indicative of the approaching spring. Weather in February »
Weather in March
The arrival of March signals the start of spring in Eugene, with a small increase in temperature and longer daylight hours compared to February. Despite the transition into spring, rainfall continues to be a marked feature of Eugene's weather, with precipitation registered on 13.3 days of the month. Weather in March »
Weather in April
April in Eugene confirms the arrival of spring, with noticeably warmer temperatures than its predecessor, March. The city witnesses a decline in rainfall, marking the progression towards drier months. An increase in sunshine to 6.7 hours signifies more clear skies, which translates to improved visibility over March. Weather in April »
Weather in May
May's weather in Eugene deviates from the trend observed in earlier months, with temperatures peaking to 65.8°F (18.8°C). Rainfall decreases markedly to 0.75" (19mm), painting a picture of clear skies and a reduction in humidity levels. Weather in May »
Weather in June
June in Eugene marks the official onset of summer, bringing drier and sunnier weather conditions than May. There is a noticeable decrease in rainfall, from 0.75" (19mm) in May to 0.43" (11mm) this month, indicating a shift towards parched weather patterns. Weather in June »
Weather in July
July in Eugene witnesses the peak of summer with highs reaching a tipping point of 80.1°F (26.7°C), making it the warmest month of the year. Despite the elevated temperatures, rainfall hits its lowest point at 0.08" (2mm), reinforcing July's reputation as the driest month. Weather in July »
Weather in August
August continues the prevailing summer trend with high-reaching temperatures similar to July. However, this month brings a slight increase in rainfall, marking the end of Eugene's driest period. Nonetheless, the city remains sun-drenched with up to 11 hours of sunshine and the same extended daylight hours as observed in July. Weather in August »
Weather in September
The weather in September in Eugene starts to tilt towards fall, bringing a mild drop in temperatures compared to its preceding summer months. The rainfall increases to 0.51" (13mm), signaling a break from the summer dry spell. Weather in September »
Weather in October
October in Eugene brings in the full spirit of fall with noticeably cooler temperatures and heavier rainfall of 0.75" (19mm) compared to September. The city prepares for the winter ahead, with daylight hours dwindling further to 11 hours, and a significant reduction in sunshine duration. Weather in October »
Weather in November
November in Eugene signals the advent of winter, with temperatures dropping and rainfall increasing to 1.1" (28mm). Although the sun's presence decreases to only 4.6 hours per day, the relative humidity rises to 85%, indicating the city's shift into much cooler and wetter conditions. Weather in November »
Weather in December
December in Eugene marks the full-fledged start of winter, presenting the city with the lowest temperatures and the longest nights of the year. The weather pattern mirrors that of January with an increase in rainfall to 1.54" (39mm), the highest yearly, and a return of snowfall. Weather in December »
Updated: Aug 18, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the most humid month?
January through March and December, with an average relative humidity of 86%, are most humid months.
How much does it rain?
Throughout the year, there are 109.9 rainfall days, and 10.08" (256mm) of precipitation is accumulated.
When does it snow in Eugene?
Months with snowfall are January through March and December.
How many days does it snow?
Throughout the year, there are 5 snowfall days, and 2.36" (60mm) of snow is accumulated.
When is the lowest UV index?
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.
When does it snow the most?
February is the month with the most snowfall. Snow falls for 2.3 days and accumulates 1.5" (38mm) of snow.
What is the month with the least sunshine?
February has the least sunshine of the year, with an average of 4.1h of sunshine.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.
When it does not snow?
April through November are months without snowfall.
When are the longest days?
With an average of 15h and 24min of daylight, June has the longest days of the year.
What is the driest month?
July is the month with the least rainfall. Rain falls for 2.6 days and accumulates 0.08" (2mm) of precipitation.
When is the highest UV index?
With an average maximum UV index of 6, July is the month with the highest UV index in Eugene.
What time of the year is the hottest?
August brings the highest temperatures, with an average high of 81.3°F (27.4°C) and an average low of 49.6°F (9.8°C).
What is the least humid month in Eugene?
With an average relative humidity of 68%, August is the least humid month.
What month has the most sunshine?
With an average of 11h of sunshine, August has the most sunshine of the year.
What time of the year is the coldest?
Eugene's coldest month, December, registers temperatures that range from a high of 46.2°F (7.9°C) to a low of 33.8°F (1°C).
What is the rainiest month?
The month with the most rainfall is December, when the rain falls for 13.4 days and typically aggregates up to 1.54" (39mm) of precipitation.
What is the month with the shortest days?
With an average of 9h and 0min of daylight, December has the shortest days of the year.
Average temperature
Eugene, OR
The warmest month (with the highest average high temperature) is August (81.3°F).
The month with the lowest average high temperature is December (46.2°F).
The month with the highest average low temperature is August (49.6°F).
The coldest month (with the lowest average low temperature) is December (33.8°F).
Average pressure
Eugene, OR
- Average pressure in January:
30.12"Hg - Average pressure in February:
30.09"Hg - Average pressure in March:
30.04"Hg - Average pressure in April:
30.07"Hg - Average pressure in May:
30.04"Hg - Average pressure in June:
30.04"Hg
- Average pressure in July:
30.03"Hg - Average pressure in August:
30.01"Hg - Average pressure in September:
30.01"Hg - Average pressure in October:
30.05"Hg - Average pressure in November:
30.07"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).
Average wind speed
Eugene, OR
- Average wind speed in January:
4.5mph - Average wind speed in February:
4.4mph - Average wind speed in March:
4.5mph - Average wind speed in April:
4.3mph - Average wind speed in May:
4mph - Average wind speed in June:
4mph
- Average wind speed in July:
3.9mph - Average wind speed in August:
3.6mph - Average wind speed in September:
3.6mph - Average wind speed in October:
3.9mph - Average wind speed in November:
4.3mph - Average wind speed in December:
4.4mph
The windiest months (with the highest average wind speed) are January and March (4.5mph).
The calmest months (with the lowest average wind speed) are August and September (3.6mph).
Average humidity
Eugene, OR
The months with the highest relative humidity are January, February, March and December (86%).
The month with the lowest relative humidity is August (68%).
Average rainfall
Eugene, OR
- Average rainfall in January:
1.18" - Average rainfall in February:
1.34" - Average rainfall in March:
1.1" - Average rainfall in April:
1.14" - Average rainfall in May:
0.75" - Average rainfall in June:
0.43"
- Average rainfall in July:
0.08" - Average rainfall in August:
0.16" - Average rainfall in September:
0.51" - Average rainfall in October:
0.75" - Average rainfall in November:
1.1" - Average rainfall in December:
1.54"
The wettest month (with the highest rainfall) is December (1.54").
The driest month (with the least rainfall) is July (0.08").
Average rainfall days
Eugene, OR
- Average rainfall days in January:
11 days - Average rainfall days in February:
11.7 days - Average rainfall days in March:
13.3 days - Average rainfall days in April:
12.4 days - Average rainfall days in May:
9.5 days - Average rainfall days in June:
6.8 days
- Average rainfall days in July:
2.6 days - Average rainfall days in August:
2.5 days - Average rainfall days in September:
5.2 days - Average rainfall days in October:
10.3 days - Average rainfall days in November:
11.2 days - Average rainfall days in December:
13.4 days
The month with the highest number of rainy days is December (13.4 days).
The month with the least rainy days is August (2.5 days).
Average snowfall
Eugene, OR
The month with the highest snowfall is February (1.5").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days
Eugene, OR
- Average snowfall days in January:
1 days - Average snowfall days in February:
2.3 days - Average snowfall days in March:
0.8 days - Average snowfall days in April:
0.2 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0.1 days - Average snowfall days in December:
0.6 days
The month with the highest number of snowfall days is February (2.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Eugene, OR
- Average daylight in January:
9h and 2min - Average daylight in February:
10h and 3min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 3min - Average daylight in May:
14h and 5min - Average daylight in June:
15h and 2min
- Average daylight in July:
15h and 1min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 4min - Average daylight in December:
9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in January:
4h and 2min - Average sunshine in February:
4h and 1min - Average sunshine in March:
5h and 2min - Average sunshine in April:
6h and 4min - Average sunshine in May:
8h and 1min - Average sunshine in June:
9h and 0min
- Average sunshine in July:
10h and 5min - Average sunshine in August:
11h and 0min - Average sunshine in September:
9h and 1min - Average sunshine in October:
5h and 2min - Average sunshine in November:
4h and 4min - Average sunshine in December:
4h and 1min
The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 4h and 6min).
Average sunshine days
Eugene, OR
- Average sunshine days in January:
17.5 days - Average sunshine days in February:
14.3 days - Average sunshine days in March:
15.4 days - Average sunshine days in April:
14.9 days - Average sunshine days in May:
19.2 days - Average sunshine days in June:
21.5 days
- Average sunshine days in July:
27 days - Average sunshine days in August:
27.3 days - Average sunshine days in September:
24.1 days - Average sunshine days in October:
19.1 days - Average sunshine days in November:
17.5 days - Average sunshine days in December:
15.5 days
The month with the most sunshine days is August (27.3 days).
The month with the least sunshine days is February (14.3 days).
Average UV index
Eugene, OR
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Eugene, OR
The months with the most cloud cover are February and March (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 23).
Average visibility
Eugene, OR
The months with the highest visibility are June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, April, May, November and December (4mi).
Eugene, Oregon, USA
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