The best times to visit Nine Mile Falls for ideal weather are

May 14th to October 7th

based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.



Other Nine Mile Falls Travel Info

Weather in Nine Mile Falls


Average temperatures in Nine Mile Falls vary drastically. Considering humidity, temperatures feel cold for about half of the year and otherwise nice with a low chance of precipitation most of the year. The area is less temperate than some — in the 37th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Nine Mile Falls, the hottest months are July, August, and then June. See average monthly temperatures below. The warmest time of year is generally early August where highs are regularly around 87.8°F (31°C) with temperatures rarely dropping below 57.2°F (14°C) at night.

Nine Mile Falls Temperatures (Fahrenheit)


Nine Mile Falls Temperatures (Celsius)


“Feels-Like” Temperatures

The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.

Nine Mile Falls Perceived Temperature (F)


Nine Mile Falls Perceived Temperature (C)



Average Nine Mile Falls Temperatures by Month

Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.

Show Fahrenheit

Month Avg. High (°F) Avg. Mean (°F) Avg. Low (°F)
Jan 33.5 27.5 22.6
Feb 38.8 31.6 26.1
Mar 48.9 38.6 30.7
Apr 56.4 44.4 34.4
May 67.5 54.5 42.4
Jun 74.1 60.9 48.9
Jul 85.8 71 56
Aug 84.6 69.3 54.9
Sep 75.4 60.4 47.3
Oct 58.9 47.3 37.7
Nov 42.7 34.9 28.9
Dec 33.2 27.5 22.6

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 0.8 -2.5 -5.2
Feb 3.8 -0.2 -3.3
Mar 9.4 3.7 -0.7
Apr 13.6 6.9 1.3
May 19.7 12.5 5.8
Jun 23.4 16.1 9.4
Jul 29.9 21.7 13.3
Aug 29.2 20.7 12.7
Sep 24.1 15.8 8.5
Oct 14.9 8.5 3.2
Nov 5.9 1.6 -1.7
Dec 0.7 -2.5 -5.2



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Nine Mile Falls are July, September, and then October. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around late July. For example, on the week of July 23rd there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in mid December with an average of 2 days of significant precipitation the week of December 17th.

When can you find snow in Nine Mile Falls? Weather stations report large amounts of snow likely to be deepest around February, especially close to early February. The best time to ski (if at all) in Nine Mile Falls is often around around February 12th when fresh powder is deepest. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.

Chance of Precipitation

The graph below shows the % chance of rainy and snowy days in Nine Mile Falls.

Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Nine Mile Falls (in).

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 16% 4.4 1.4
Feb 13% 5.9 1
Mar 20% 2.7 2.7
Apr 11% 1.4 1
May 11% 0 1.3
Jun 17% 0 1.8
Jul 6% 0 0.5
Aug 11% 0 0.8
Sep 9% 0 0.9
Oct 10% 0 1.6
Nov 19% 2.5 1.6
Dec 21% 5.8 2.1

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 16 11.2 3.6
Feb 13 15 2.5
Mar 20 6.9 6.9
Apr 11 3.6 2.5
May 11 0 3.3
Jun 17 0 4.6
Jul 6 0 1.3
Aug 11 0 2
Sep 9 0 2.3
Oct 10 0 4.1
Nov 19 6.4 4.1
Dec 21 14.7 5.3


Humidity and Wind

Nine Mile Falls has some extremely humid months, and slightly dry months in the opposite season. The least humid month is August (31.5% relative humidity), and the most humid month is January (89.7%).

Wind in Nine Mile Falls is usually calm. The windiest month is April, followed by March and May. April’s average wind speed of around 8.2 knots (9.5 MPH or 15.2 KPH) is considered “a gentle breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in late April where average top sustained speeds reach 17.2 knots, which is considered a fresh breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in Nine Mile Falls.

Avg. Relative Humidity


The graph below shows wind speed (max and average) in knots.

Max Sustained Wind
Average Daily Wind

Average Wind Speeds

Show Wind Speeds

All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.

Month Avg. Wind Avg. Wind Feel Sustained High Wind High Wind Feel
Jan 6.1 Light breeze 12.2 Significant breeze
Feb 6.8 Light breeze 12.8 Significant breeze
Mar 8 Gentle breeze 15.1 Significant breeze
Apr 8.2 Gentle breeze 15.8 Significant breeze
May 7.4 Gentle breeze 14.6 Significant breeze
Jun 7 Gentle breeze 13.7 Significant breeze
Jul 6.2 Light breeze 12.7 Significant breeze
Aug 6.3 Light breeze 12.9 Significant breeze
Sep 6.3 Light breeze 12.6 Significant breeze
Oct 6.6 Light breeze 12.5 Significant breeze
Nov 7 Gentle breeze 13.3 Significant breeze
Dec 6.6 Light breeze 12.7 Significant breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 89.7%
Feb 81.5%
Mar 67.5%
Apr 53.6%
May 46.2%
Jun 47.5%
Jul 31.7%
Aug 31.5%
Sep 39.5%
Oct 61%
Nov 80.4%
Dec 88.4%


Is it Safe to Travel to Nine Mile Falls?

Our best data indicates this area is generally safe. As of Dec 04, 2023 there are no travel advisories or warnings for the United States; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Dec 04, 2023.


The Busiest and Least Crowded Months

The busiest month for tourism in Nine Mile Falls, WA, US is July, followed by August and May. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Nine Mile Falls in September. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month


Most Popular Months to Visit

Tourists Seeking Accommodations

Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is slightly extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 36.1 in September means 36.1% of the tourists vs. July.



Overall Nine Mile Falls Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderately cold. Highs range from 71.8°F (22.1°C) and 41.2°F (5.1°C) with warmer temperatures in the later months. Rain is somewhat common with 3 to 6 days of significant precipitation per month. Spring is the second busiest for tourism, which makes it a good time for those looking for things to do.

Summer (June through August)

The middle-year months have very comfortable weather with high temperatures that are quite warm. These months see the least precipitation with 2 to 5 days of precipitation per month. June – August is the busiest season for tourism in Nine Mile Falls, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 79.7°F (26.5°C) and 36.5°F (2.5°C), which will feel chilly given the humidity and wind. It rains or snows a significant amount: 3 to 6 days per month. Tourism is the slowest during these months due to the weather, so hotels may be affordably priced.

Winter (December through February)

Weather is far too cold this time of year in Nine Mile Falls to be enjoyable for warm weather travelers. The average high during this season is between 42.3°F (5.7°C) and 31.3°F (-0.4°C). On average, it rains or snows a fair amount: 4 to 6 times per month. These times of year are fairly slow with tourists.


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