Climate and monthly weather forecast
Cave Junction, OR

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The climate of Cave Junction

Cave Junction, Oregon exhibits a Mediterranean climate with warm summers, according to the Köppen climate classification, labelled as Csb. It is positioned in the Northern Hemisphere's Pacific Northwest region. The town experiences a relatively high level of humidity year-round, averaging between 63% in August and 85% in both January and February. The visibility in Cave Junction tends to range from 4 miles in the cooler months to 6 miles during the summer.

A striking pattern in Cave Junction's weather is the noticeable peaks and valleys in its precipitation and sunlight exposure. Rainfall is more frequent between November and February, peaking with 4.02" (102mm) in December. The number of rainfall days also escalates during these cooler months, with 18.7 days in March and declining to a mere 2.5 days by August. In contrast, sunshine hours are at their maximum during July and August at 11.8 hours, diminishing to a low of 4.7 hours in December.

Cave Junction's wind speed ranges from 3.2mph (5.1km/h) in August to 4mph (6.4km/h) in March, with wind gusts only slightly increasing to peak at 6.3mph (10.1km/h) in December. Overall, the climate throughout the year in Cave Junction experiences significant variations, particularly with regard to rainfall and sunshine hours.

The best time to visit Cave Junction

Given the climate characteristics of Cave Junction, the optimal time to visit could be from June to August. During this period, rainfall is minimal, with June recording only 0.71" (18mm) and July being the driest month with just 0.12" (3mm). Correspondingly, the number of rainfall days is at its lowest, averaging around 5 days.

Sunshine hours are also at their peak during this period, reaching a high of 11.8 hours in both July and August. The visibility increases up to 6 miles accompanied by temperatures that oscillate between 44.1°F (6.7°C) and 84.7°F (29.3°C), providing a comfortable atmosphere for outdoor activities.

The worst time to visit Cave Junction

Venturing to Cave Junction may prove unfavorable during the winter months. December sees the highest rainfall with an average of 4.02" (102mm), along with 15.9 rainfall days. Moreover, December has the shortest sunshine duration at 4.7 hours, coupled with lower temperatures that range from 31.5°F (-0.3°C) to 46°F (7.8°C), adding to the chill factor.

The daylight hours decrease to just 9.2 hours in December, the lowest for the year, restricting outdoor activities. Winter also brings an increase in humidity and cloud percentages, affecting overall visibility and comfort levels.

Spring weather in Cave Junction

Spring surfaces as a transitional season in Cave Junction, commencing with temperatures hovering between 33.3°F (0.7°C) and 52.5°F (11.4°C) in March and escalating to between 39.7°F (4.3°C) and 66.7°F (19.3°C) by May. The rainfall showcases a consistent decline in the season, starting from 3.19" (81mm) in March to 1.69" (43mm) in May. Correspondingly, the number of rainfall days decreases as well, from 18.7 days in March to 11.8 by the end of May.

Sunshine hours stretch from 6.4 hours in March to 9.9 hours in May, providing longer daylight hours. Wind velocities, on the other hand, maintain stability throughout the season, fluctuating only slightly from 4mph (6.4km/h) to 3.7mph (6km/h) from March to May.

Summer weather in Cave Junction

Summer in Cave Junction extends a warm, dry season with temperatures that vary between 44.1°F (6.7°C) in June, maxing out at 84.7°F (29.3°C) in August. The rainfall level drops significantly during these months. Sunshine hours are at their zenith with 10.7 in June, peaking at 11.8 hours for July and August. This season presents an optimal window for vacationers to enjoy outdoor activities with extended daylight hours. Wind speeds and gusts are relatively low, creating a settled ambiance.

Autumn weather in Cave Junction

Come autumn, Cave Junction reveals an upward trend in rainfall from just 0.59" (15mm) in September, climbing to 2.4" (61mm) in November. The number of rainfall days follows a similar trajectory, with an increase from 5.3 days to 13.4 days.

The temperature also experiences a considerable drop during this season, ranging from 45°F (7.2°C) to 77.4°F (25.2°C) in September, plunging to midway between 36°F (2.2°C) and 54°F (12.2°C) in November. This change in weather conditions brings about a decrease in visibility and a concomitant increase in humidity and cloud coverage.

Winter weather in Cave Junction

Winter months boast of the most rainfall in Cave Junction, with December leading at 4.02" (102mm) over roughly 16 days. Temperatures are at their coolest from 31.5°F (-0.3°C) to 46°F (7.8°C) in December, climbing slightly to range between 32.5°F (0.3°C) and 49.3°F (9.6°C) in February. Sunshine hours take a nosedive to an annual low with 4.7 hours in December and gradually recovers to 5.2 hours by February.

Apart from rainfall, snowfall also marks this season. Though typically minimal, snowfall is around 1.34" (34mm) in January, the highest for the season. These conditions paired with limited daylight and lower visibility might limit outdoor activities and travel plans.

Weather in January

January is the coldest month in Cave Junction, with average high and low temperatures of 47.8°F (8.8°C) and 32.5°F (0.3°C) respectively. Winter is in full swing, making this a frosty start to the year. The city gets enveloped in heavy cloud cover, touching 49%, and sees a relative humidity of 85%. Weather in January »

Weather in February

In February, Cave Junction experiences a slight increase in average high temperature, reaching 49.3°F (9.6°C), while maintaining the same average low temperature of 32.5°F (0.3°C). There is a modest drop in precipitation, clocking in at 3.11" (79mm) spread across 15.2 days. Weather in February »

Weather in March

March in Cave Junction brings warmer temperatures, with highs now hitting 52.5°F (11.4°C) and climbing from February's averages. A significant pattern emerges with this month seeing the highest days of rainfall, drenching the city on 18.7 days. Weather in March »

Weather in April

As April arrives, Cave Junction enjoys an even warmer climate, with average high temperatures of 57.9°F (14.4°C), a large leap from March's figures. While experiencing a substantial drop in rainfall to 2.01" (51mm), this decrease marks the onset of relatively drier months ahead. Weather in April »

Weather in May

May ushers in a new weather pattern, as temperatures in Cave Junction begin to spike, the highs averaging at 66.7°F (19.3°C). Noticeably, the rainfall plummets to 1.69" (43mm) and occurs over just 11.8 days, indicating the arrival of a drier spell. Weather in May »

Weather in June

June, being the onset of summer, reveals a drastic rise in temperatures leading to an average high of 73.8°F (23.2°C). Cave Junction experiences the second-lowest rainfall in the year, dropping to a mere 0.71" (18mm), spread over just 7.4 days. Weather in June »

Weather in July

July brings the peak of summer heat to Cave Junction, Oregon, showcasing the highest temperatures of the year, peaking at a hot 83.8°F (28.8°C). Alongside this, remarkable characteristics of July include lowest relative humidity (64%) and scanty rainfall, down to an astonishing 0.12" (3mm) over the sparsest rainfall days, just 3.4. Weather in July »

Weather in August

August marches in step with July, continuing the trend of high temperatures, though slightly decreased averaging 84.7°F (29.3°C). Despite a small increase in rainfall to 0.2" (5mm), August maintains summer's bone-dry pattern. It's the least cloudy month as the percentage of cloud cover drops to just 16%, which is a year-round low. Weather in August »

Weather in September

The arrival of September signals the beginning of a transition from hot summer days towards milder autumn weather in Cave Junction. Although the average temperature still holds a high scale, standing at 77.4°F (25.2°C), it exhibits the start of a gradual cooling phase. Weather in September »

Weather in October

October brings a noticeable drop in daytime temperatures with highs dipping to an average of 65.5°F (18.6°C). As Cave Junction transitions deeper into autumn, rainfall increases further to 1.54" (39mm), becoming a prominent feature of the weather. Weather in October »

Weather in November

As winter approaches, November experiences a decrease in average high temperatures, coming down to 54°F (12.2°C). Rainfall increases further to 2.4" (61mm) falling over 13.4 days. Given its increase in cloud cover to 44% and decrease in optimal visibility to 5 miles, November experiences cloudier skies and decreasing daylight durations, settling at 9.8 hours. Weather in November »

Weather in December

December culminates the year with Cave Junction in the full swing of winter, experiencing average high and low temperatures of 46°F (7.8°C) and 31.5°F (-0.3°C). Most notably, December experiences the highest amount of rainfall in the year, at a significant 4.02" (102mm) spanned across 15.9 days. Weather in December »
Updated: Jun 4, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the most humid month?

The most humid month is January, with an average relative humidity of 85%.

How much does it rain in Cave Junction?

Throughout the year, there are 135.3 rainfall days, and 23.54" (598mm) of precipitation is accumulated.

When does it snow?

Months with snowfall are January through April, November and December.

How much does it snow in Cave Junction?

In Cave Junction, Oregon, during the entire year, snow falls for 7.9 days and aggregates up to 5.12" (130mm) of snow.

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.

What is the snowiest month?

February is the month with the most snowfall. Snow falls for 2.8 days and accumulates 1.5" (38mm) of snow.

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?

In Cave Junction, snow does not fall in May through October.

When are the longest days?

June has the longest days of the year, with an average of 15h and 12min of daylight.

What is the driest month?

July is the month with the least rainfall. Rain falls for 3.4 days and accumulates 0.12" (3mm) of precipitation.

What are the months with the most sunshine?

The months with the most sunshine are July and August, with an average of 11.8h of sunshine.

When is the highest UV index?

The month with the highest UV index is July, with an average maximum UV index of 6.

What month is the hottest?

Temperature readings reach their annual highs in August, averaging 84.7°F (29.3°C) and a minimum average of 49.1°F (9.5°C).

What is the least humid month?

With an average relative humidity of 63%, August is the least humid month.

What month is the coldest?

Cave Junction experiences its average lowest temperatures in December, reaching a peak of 46°F (7.8°C) and a minimum of 31.5°F (-0.3°C).

What is the rainiest month?

December is the month with the most rainfall. Rain falls for 15.9 days and accumulates 4.02" (102mm) of precipitation.

What is the month with the shortest days?

With an average of 9h and 12min of daylight, December has the shortest days of the year.

What is the month with the least sunshine in Cave Junction?

December has the least sunshine of the year, with an average of 4.7h of sunshine.
Today
Tomorrow
Long-term
YearJFMAMJJASOND

Average temperature
Cave Junction, OR

Average temperature - Cave Junction, OR

The warmest month (with the highest average high temperature) is August (84.7°F).
The month with the lowest average high temperature is December (46°F).

The month with the highest average low temperature is August (49.1°F).
The coldest month (with the lowest average low temperature) is December (31.5°F).

Average pressure
Cave Junction, OR

Average pressure - Cave Junction, OR

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is August (29.99"Hg).

Average wind speed
Cave Junction, OR

Average wind speed - Cave Junction, OR

The windiest month (with the highest average wind speed) is March (4mph).
The calmest month (with the lowest average wind speed) is August (3.2mph).

Average humidity
Cave Junction, OR

Average humidity - Cave Junction, OR

The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (63%).

Average rainfall
Cave Junction, OR

Average rainfall - Cave Junction, OR

The wettest month (with the highest rainfall) is December (4.02").
The driest month (with the least rainfall) is July (0.12").

Average rainfall days
Cave Junction, OR

Average rainfall days - Cave Junction, OR

The month with the highest number of rainy days is March (18.7 days).
The month with the least rainy days is August (2.5 days).

Average snowfall
Cave Junction, OR

Average snowfall - Cave Junction, OR

The month with the highest snowfall is February (1.5").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days
Cave Junction, OR

Average snowfall days - Cave Junction, OR

The month with the highest number of snowfall days is February (2.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight / Average sunshine
Cave Junction, OR

Average daylight / Average sunshine - Cave Junction, OR

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 12min).

The months with the most sunshine are July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 4h and 42min).

Average sunshine days
Cave Junction, OR

Average sunshine days - Cave Junction, OR

The month with the most sunshine days is July (26.7 days).
The month with the least sunshine days is March (10.8 days).

Average UV index
Cave Junction, OR

Average UV index - Cave Junction, 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
Cave Junction, OR

Average cloud cover - Cave Junction, OR

The month with the most cloud cover is March (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 16).

Average visibility
Cave Junction, OR

Average visibility - Cave Junction, OR

The month with the highest visibility is August (6mi).
The months with the lowest visibility are January, February, March, April and December (4mi).

Cave Junction, Oregon, USA

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