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Mount Rainier (WA)
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United States weather

Weather in Mount Rainier, Washington for October 2026

Your guide to Mount Rainier weather in October - trends and predictions

    Temperatures

  • The forecast for the next days in Mount Rainier predicts temperatures to be around 15 °F, close to the historical average.

  • In general, the average temperature in Mount Rainier at the beginning of October is 20.4 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 10.9 °F by the end of October.

    • Rain 🌧️

  • The climate of Mount Rainier in October is notably wet, with an average of 13 rainy days, and a total of 309.7 mm of precipitation.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
18
Dry days
Average rainy days
13
Rainy days
Average snowy days
0
Snow days
Average temperatures
13°/7°
Temperatures
Average wind speed
11 km/h
Avg max wind
Average humidity
72 %
Avg humidity

Mount Rainier Weather October

Move between months or click on a day
September
November
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Moderate rain at times
19°
2
Sunny
24°
3
Sunny
21°
4
Sunny
22°
5
Partly cloudy
19°
6
Overcast
18°
7
Sunny
20°
8
Sunny
22°
9
Overcast
15°
10
Patchy rain possible
10°
11
Sunny
13°
12
Overcast
8°
13
Overcast
5°
14
Patchy rain possible
6°
15
Overcast
13°
16
Overcast
12°
17
Overcast
10°
18
Moderate or heavy rain shower
10°
19
Light rain shower
10°
20
Mist
11°
21
Partly cloudy
14°
22
Overcast
19°
23
Overcast
13°
24
Moderate or heavy rain shower
12°
25
Patchy light rain with thunder
10°
26
Light rain
6°
27
Mist
9°
28
Overcast
12°
29
Moderate rain
10°
30
Overcast
12°
31
Patchy rain possible
17°

Temperatures trend during October in Mount Rainier

See the weather trend as well as the moving average line

October weather in Mount Rainier day by day

Click on a date for more information
September November
Date Weather Temperatures Rain UV More
Oct. 1 Moderate rain at times
Moderate rain at times
 19° /9° 3.8 mm 2
Oct. 2 Sunny
Sunny
 24° /12° 0 mm 4
Oct. 3 Sunny
Sunny
 21° /8° 0 mm 4.4
Oct. 4 Sunny
Sunny
 22° /10° 0 mm 4.2
Oct. 5 Partly cloudy
Partly cloudy
 19° /8° 0 mm 3.7
Oct. 6 Overcast
Overcast
 18° /6° 0 mm 3.9
Oct. 7 Sunny
Sunny
 20° /9° 0 mm 6
Oct. 8 Sunny
Sunny
 22° /10° 0 mm 6
Oct. 9 Overcast
Overcast
 15° /6° 0 mm 3
Oct. 10 Patchy rain possible
Patchy rain possible
 10° /0° 0.9 mm 3
Oct. 11 Sunny
Sunny
 13° /0° 0 mm 4
Oct. 12 Overcast
Overcast
 8° /0° 4.2 mm 3
Oct. 13 Overcast
Overcast
 5° /0° 4.5 mm 1
Oct. 14 Patchy rain possible
Patchy rain possible
 6° /-1° 4.5 mm 2
Oct. 15 Overcast
Overcast
 13° /0° 0 mm 4
Oct. 16 Overcast
Overcast
 12° /5° 0 mm 2
Oct. 17 Overcast
Overcast
 10° /7° 0 mm 0
Oct. 18 Moderate or heavy rain shower
Moderate or heavy rain shower
 10° /6° 19 mm 0
Oct. 19 Light rain shower
Light rain shower
 10° /7° 51.3 mm 0
Oct. 20 Mist
Mist
 11° /6° 0 mm 1
Oct. 21 Partly cloudy
Partly cloudy
 14° /7° 0 mm 1
Oct. 22 Overcast
Overcast
 19° /9° 0 mm 1
Oct. 23 Overcast
Overcast
 13° /8° 0 mm 0
Oct. 24 Moderate or heavy rain shower
Moderate or heavy rain shower
 12° /8° 35.9 mm 0
Oct. 25 Patchy light rain with thunder
Patchy light rain with thunder
 10° /4° 15.7 mm 1
Oct. 26 Light rain
Light rain
 6° /5° 61 mm 0
Oct. 27 Mist
Mist
 9° /4° 2.5 mm 0
Oct. 28 Overcast
Overcast
 12° /6° 0 mm 0
Oct. 29 Moderate rain
Moderate rain
 10° /7° 21.9 mm 1
Oct. 30 Overcast
Overcast
 12° /4° 0 mm 1
Oct. 31 Patchy rain possible
Patchy rain possible
 17° /4° 7.5 mm 1
Next
Important Notice
Our weather forecast for Mount Rainier in October is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Mount Rainier forecast closer to your planned date for the most up-to-date weather information.
Change Month
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Mount Rainier in October - FAQ

What are the expected maximum and minimum temperatures in Mount Rainier during October?
During October, expect a variety of temperatures with highs around 13° and lows near 7°, suitable for diverse activities and preferences.

How much rainfall should be expected in Mount Rainier during October?
Significant rainfall exceeding 309.7 mm is expected in Mount Rainier during October, occurring over more than 13 days. Preparing for wet conditions is recommended in your planning.

What are the typical wind conditions in Mount Rainier during October?
The average wind speed in Mount Rainier during October is 11 km/h, suggesting breezy to windy conditions, depending on your activities.

October rainfall patterns in Mount Rainier

Explore the daily rainfall trends and prepare for Mount Rainiers October weather 💧
Typically, Mount Rainier has 13 rainy days in October with a total of 309.7 mm of rainfall.

UV exposure in Mount Rainier during October

Stay informed about UV levels for safe outdoor activities throughout the month of October ☀️

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Location coordinates Where is Mount Rainier?

Get accurate weather forecasts for Mount Rainier, located at latitude 46.853 and longitude -121.76. Stay updated with localized weather information tailored for Mount Rainier.

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