Mount Rainier National Park Climate and Average Weather
Climate of Mount Rainier National Park: average temperatures, rainfall and seasons month by month.
Climate in Mount Rainier National Park month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Month | Avg high | Avg low | Rainfall | Rating |
|---|---|---|---|---|
| January | 23° | 13° | 12,9 in | ★☆☆☆☆ |
| February | 19° | 9° | 11,4 in | ★☆☆☆☆ |
| March | 23° | 12° | 13,4 in | ★☆☆☆☆ |
| April | 27° | 15° | 5,1 in | ★☆☆☆☆ |
| May | 33° | 20° | 3,7 in | ★★☆☆☆ |
| June | 39° | 25° | 3,6 in | ★★☆☆☆ |
| July | 49° | 34° | 1,1 in | ★★★★☆ |
| August | 48° | 35° | 2,8 in | ★★★☆☆ |
| September | 44° | 30° | 3,9 in | ★★☆☆☆ |
| October | 34° | 22° | 5,3 in | ★☆☆☆☆ |
| November | 25° | 15° | 14,9 in | ★☆☆☆☆ |
| December | 25° | 15° | 21,9 in | ★☆☆☆☆ |
Climate type: Polar. Source: Open-Meteo archive (ERA5).
Recent extremes in Mount Rainier National Park
Highest and lowest readings observed in the last 3 years of reanalysis data - not all-time records.
How Mount Rainier National Park compares with nearby places
Annual averages, and the difference against Mount Rainier National Park.
| Place | Distance | Avg temp | vs here | Annual rain |
|---|---|---|---|---|
| Mount Rainier | 2 mi | 6°F | 53°F cooler | 103 in |
| Seattle-Tacoma International Airport | 48 mi | 52°F | +57°F warmer | 51 in |
| Seattle | 58 mi | 53°F | +58°F warmer | 43 in |
| Area Code 206 | 58 mi | 53°F | +58°F warmer | 43 in |
| King County | 58 mi | 53°F | +58°F warmer | 43 in |
Best time to visit Mount Rainier National Park
Go in July. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: January, February and December - expect the least comfortable mix of heat, cold or rain.
What this means for Mount Rainier National Park
Today is much colder than average for October. The forecast high of 18°F is 15.8°F below the 34°F typical for this month.
A 100% chance means rain is expected over most of the area. Plan indoor alternatives. Around 1,1 in is forecast, which is enough to soak trails and slow traffic.
Visibility is down to 0,2 mi - use low beams and leave extra following distance. Gusts to 51 mph will push high-sided vehicles on exposed roads and bridges. Overnight lows near 10°F mean ice is possible on bridges before dawn. Snow is falling now - expect reduced traction and slower journeys.
Northern Hemisphere, so peak summer falls in June to August.
The gap between the warmest and coldest month averages 60°F.
What to pack, what to skip
- A warm mid-layer and gloves for early mornings and evenings
- Insulated outer layer, hat and boots with grip for ice
- A packable rain shell - 2 of the next 7 days carry a real chance of rain
- Avoid high-elevation trails without traction devices - frozen surfaces persist in shade all day.
- Avoid exposed ridgelines, small boats and rooftop viewpoints while gusts stay above 51 mph.
- If your dates are flexible, avoid January, February and December - historically the least comfortable months here.
Summary
Mount Rainier National Park is a national park in Washington. Mount Rainier National Park is a US national park known for a glaciated volcano and wildflower meadows.
Right now it is 16°F (-9°C) in Mount Rainier National Park with heavy snow. It feels like 7°F. Today runs from 10°F to 18°F. Chance of precipitation is 100%. Sightseeing conditions score 2.4/10 - poor - consider another day.
The best time to visit Mount Rainier National Park is July. The climate is polar. January, February and December tend to be the least comfortable months. July is the warmest month with average highs near 49°F, while February is the coldest with lows near 9°F.
The closest major airport is Seattle-Tacoma International Airport (SEA), about 48 mi away. Nearby highlights include Mount Rainier, Space Needle, Columbia River and Mount Hood.
In plain terms. Today is much colder than average for October. The forecast high of 18°F is 15.8°F below the 34°F typical for this month. The best window to be outside is roughly 6 PM to 9 PM, when temperature, rain chance and wind line up best. Visibility is down to 0,2 mi - use low beams and leave extra following distance. Gusts to 51 mph will push high-sided vehicles on exposed roads and bridges. Overnight lows near 10°F mean ice is possible on bridges before dawn. Snow is falling now - expect reduced traction and slower journeys.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Quick facts about Mount Rainier National Park
| Type | National park |
|---|---|
| State | Washington |
| Country | United States |
| Continent | North America |
| Coordinates | 46°52′48″N 121°43′36.8″W (46.88, -121.7269) |
| Established | 1899 |
| Known for | a glaciated volcano and wildflower meadows |
| Local time | 6:12 PM (UTC-07:00) |
| Best months | July |
| Climate | Polar |
Weather map for Mount Rainier National Park
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Animated layers by Windy. For pin-level detail and nearby places, see the interactive map below.
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Frequently asked questions
Where is Mount Rainier National Park?
Mount Rainier National Park is a national park in Washington. Its coordinates are 46.88, -121.7269. It lies in North America.
What is the weather like in Mount Rainier National Park right now?
It is currently 16°F (-9°C) with heavy snow. Humidity is 61% and wind is 4 mph.
When is the best time to visit Mount Rainier National Park?
July offer the most comfortable conditions in Mount Rainier National Park, which has a polar climate. January, February and December are usually the hardest months for outdoor plans.
What time zone is Mount Rainier National Park in?
Mount Rainier National Park observes America/Los_Angeles (UTC-07:00). The local time is 6:12 PM.
What is the nearest airport to Mount Rainier National Park?
The closest airports are Seattle-Tacoma International Airport (SEA), 48 mi away, Portland International Airport (PDX), 98 mi away and Vancouver International Airport (YVR), 174 mi away.
What are the top things to do in Mount Rainier National Park?
Popular options include Mount Rainier, Space Needle, Columbia River, Mount Hood, Olympic National Park and Deception Pass State Park.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (national-parks) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Weather Service. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated October 28, 2026 at 6:12 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
