Mount Rainier National Park weather and climate in 2025
January
February
March
April
May
June
July
August
September
October
November
December
Overview
May
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Overview
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Mount Rainier National Park weather and climate in 2025
January
February
March
April
May
June
July
August
September
October
November
December
Overview
May
< April
Overview
June >
Day
6 °C
Night
-2 °C
Precipitation
128 mm
in month
Rainy days
13 days
in month
Daylight
15 hours
average
Sunshine
7 hours
average
Humidity
61 %
Day
6 °C
Night
-2 °C
Precipitation
128 mm
in month
Rainy days
13 days
in month
Daylight
15 hours
average
Sunshine
7 hours
average
Humidity
61 %
Overview: Mount Rainier National Park
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We make the most from 40 years of historical weather data to predict the best weather conditions.Weather overview for Mount Rainier National Park
Weather overview
Mount Rainier National Park (United States of America) is a place with a cold climate. Temperatures during the day are in the range from -4 °C (25 °F) in December to 17 °C (62 °F) in August. The highest night temperatures could be experienced in August with 8 °C (46 °F), the lowest in December with -11 °C (13 °F). The least rainy month in Mount Rainier National Park is August with its 6 days of rain, the rainiest month is November, when it rains 19 days.
January weather
The day temperature starts to rise, with its value being -2 °C (28 °F) in Mount Rainier National Park, and the beginning of the rise of the night temperature could be noticed too, with its value of -9 °C (16 °F). The ongoing wet season is noticeable. The number of rainy days descent's start could be observed, with its value of 18 days, on the contrary the beginning of the rise of the rainfall amount could be noticed in January.
February weather
The ongoing wet season is noticeable in February in Mount Rainier National Park. The day temperature continues to rise, with its value of -2 °C (29 °F), and the rise of the night temperature can be observed as well, the value of this measure is -8 °C (17 °F). The number of rainy days continues to descent, with its value of 17 days, while the beginning of the descent of the rainfall amount could be noticed in February. The number of sun hours (without clouds) rises similarly to the previous month, its value is 4 hours.
March weather
The rise of the day temperature can be observed, its value is -1 °C (30 °F) in Mount Rainier National Park, and the night temperature rises similarly to the previous month too, its value is -7 °C (19 °F). The number of rainy days rise's start could be observed, with its value of 18 days. The wet season is close to its peak. The rise of the number of sun hours (without clouds) can be observed, with its value of 5 hours.
We aggregate data from combining multiple weather sources to ensure accuracy of the highest order.April weather
The day temperature continues to rise, its value is 0 °C (32 °F) in Mount Rainier National Park, and the night temperature rises similarly to the previous month as well. The number of rainy days starts to descent, and the beginning of the descent of the rainfall amount could be noticed as well, with its value being 152 mm (6.00 in). The rise of the number of sun hours (without clouds) can be observed.
May weather
The rise of the day temperature can be observed, with its value being 6 °C (42 °F) in Mount Rainier National Park, and the night temperature continues to rise as well, the value of this measure is -2 °C (29 °F). The number of rainy days descents similarly to the previous month, its value is 13 days, and the descent of the rainfall amount can be observed too, its value is 128 mm (5.04 in). The rise of the number of sun hours (without clouds) can be observed, its value is 7 hours.
June weather
The tourist season slowly starts in Mount Rainier National Park. The day temperature continues to rise, with its value of 10 °C (50 °F), and the night temperature rises similarly to the previous month too, with its value being 2 °C (35 °F). The number of rainy days continues to descent, with its value of 11 days, and the rainfall amount continues to descent as well, with its value of 105 mm (4.15 in). The day length is on its maximum, with its value of 16 hours.
July weather
The tourist season is taking place in Mount Rainier National Park. The day temperature continues to rise, with its value of 14 °C (57 °F), and the rise of the night temperature can be observed as well, with its value of 5 °C (40 °F). The number of rainy days continues to descent, its value is 6 days, while the rainfall amount is on its minimum, its value is 40 mm (1.59 in). The number of sun hours (without clouds) reaches its maximum in July.
We make the most from 40 years of historical weather data to predict the best weather conditions.August weather
The day temperature is on its maximum, the value of this measure is 17 °C (62 °F) in Mount Rainier National Park, and the maximum of the night temperature is observable as well, its value is 8 °C (46 °F). The tourist season is close to its peak. The number of rainy days is on its minimum, with its value of 6 days, while the rainfall amount rise's start could be observed, with its value being 46 mm (1.82 in). The number of sun hours (without clouds) starts to descent.
September weather
The tourist season is taking place in Mount Rainier National Park. The rainfall amount rises similarly to the previous month, the value of this measure is 88 mm (3.48 in). The night temperature descent's start could be observed, its value is 4 °C (39 °F), and the beginning of the descent of the day temperature could be noticed too, its value is 12 °C (54 °F). The number of sun hours (without clouds) continues to descent, with its value being 7 hours. The wind speed is on its minimum in September.
October weather
The descent of the day temperature can be observed, its value is 6 °C (42 °F) in Mount Rainier National Park, and the night temperature continues to descent too, with its value of -1 °C (31 °F). The number of rainy days rises similarly to the previous month, the value of this measure is 13 days, and the rainfall amount continues to rise as well, with its value being 196 mm (7.73 in). The number of sun hours (without clouds) continues to descent, with its value being 5 hours.
November weather
The wet season is at its beginning in Mount Rainier National Park. The day temperature descents similarly to the previous month, with its value of 1 °C (34 °F), and the night temperature descents similarly to the previous month too, with its value of -5 °C (24 °F). The rainfall amount reaches its maximum, with its value being 354 mm (13.94 in), and the number of rainy days reaches its maximum too, with its value of 19 days. The number of sun hours (without clouds) continues to descent, with its value of 2 hours.
December weather
The minimum of the day temperature can be noticed in Mount Rainier National Park, and the minimum of the night temperature can be noticed as well in this month. The beginning of the descent of the rainfall amount could be noticed, the value of this measure is 329 mm (12.97 in). The number of sun hours (without clouds) is on its minimum, with its value of 2 hours. The minimum of the day length is observable in December. The wet season is close to its peak.
FAQs
How many hours of sun to expect in Mount Rainier National Park in April?
There is an average length of sunshine of 6 hours per day in April in Mount Rainier National Park.
How windy is it in Mount Rainier National Park in May?
An average wind scale that can be expected in Mount Rainier National Park in May is 3.
How many days of precipitation on average can I expect in June in Mount Rainier National Park?
In June in Mount Rainier National Park, we can expect 11 days to be rainy, that is, days when precipitation exceeds 2 mm (0.08 in). Converted to days of the week, this means that it will occur on an average of 2.5 days of the week, or in general - 36 % days.
Are there good conditions to visit in July in Mount Rainier National Park?
In Mount Rainier National Park in July, there are ideal conditions for a vacation. You can expect just 6 days of rain during the month, taking an umbrella is not necessary. A relatively low temperature of 14 °C (57 °F) may be ideal for walking or outdoor activities, but some people may have a different idea of the holiday. The night temperature of 5 °C (40 °F) is not inviting for evening and night activities except for visiting a bar and having beer or two.
We make the most from 40 years of historical weather data to predict the best weather conditions.What temperature can I expect during the day in August in Mount Rainier National Park?
In August in Mount Rainier National Park, the average daily temperatures will be 17 °C (62 °F). Nice temperature for walking around the city or on the beach, but you will probably get cold soon when wearing a swimsuit. When walking around all day, people used to cold conditions, pull out their shorts and get rid of their sweaters. On some days, when spending time in the direct sun, sunscreen can be useful, especially for people with more sensitive skin.
Is there a wet season in September in Mount Rainier National Park?
No, there is no wet season in Mount Rainier National Park in September - you can expect 9 days of rain during the month.
What is the air temperature in Mount Rainier National Park in October at night?
The average night temperature in Mount Rainier National Park in October is -1 °C (31 °F). The nights will be cool, layers of clothes will be needed for evening and morning walks, the hotel should be equipped with heating.