The best times to visit American River for ideal weather are

October 15th to April 22nd

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



Other American River Travel Info

Weather in American River


Average temperatures in American River vary somewhat. 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 somewhat temperate — in the 51st 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 American River, the hottest months are January, February, and then December. See average monthly temperatures below. The warmest time of year is generally early to mid February where highs are regularly around 82.9°F (28.3°C) with temperatures rarely dropping below 56.8°F (13.8°C) at night.

American River Temperatures (Fahrenheit)


American River 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.

American River Perceived Temperature (F)


American River Perceived Temperature (C)



Average American River 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 81.7 67.4 54.7
Feb 80.4 67.2 55.5
Mar 77.2 63.6 50.7
Apr 71.6 59.2 46.1
May 65.8 55.6 44.8
Jun 61 52.6 43.2
Jul 59.8 51.1 41.2
Aug 61.2 51.4 40
Sep 64.9 53.9 41
Oct 69.9 56.7 43
Nov 75.2 61.5 47.9
Dec 78.1 64.2 50.4

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 27.6 19.7 12.6
Feb 26.9 19.6 13.1
Mar 25.1 17.6 10.4
Apr 22 15.1 7.8
May 18.8 13.1 7.1
Jun 16.1 11.4 6.2
Jul 15.4 10.6 5.1
Aug 16.2 10.8 4.4
Sep 18.3 12.2 5
Oct 21.1 13.7 6.1
Nov 24 16.4 8.8
Dec 25.6 17.9 10.2



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in American River are January, February, and then March. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around late January. For example, on the week of January 22nd there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in early to mid July with an average of 2 days of significant precipitation the week of July 9th.

When can you find snow in American River? Weather stations report no annual snow. 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 American River.

Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in American River (in).

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 3% 0 0.4
Feb 3% 0 0.7
Mar 6% 0 1.2
Apr 10% 0 1.5
May 19% 0 1.9
Jun 22% 0 2.8
Jul 23% 0 2.7
Aug 20% 0 2.3
Sep 12% 0 1.6
Oct 6% 0 0.7
Nov 7% 0 0.8
Dec 7% 0 1

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 3 0 1
Feb 3 0 1.8
Mar 6 0 3
Apr 10 0 3.8
May 19 0 4.8
Jun 22 0 7.1
Jul 23 0 6.9
Aug 20 0 5.8
Sep 12 0 4.1
Oct 6 0 1.8
Nov 7 0 2
Dec 7 0 2.5


Humidity and Wind

American River has some very humid months, with other comfortably humid months. The least humid month is January (51.1% relative humidity), and the most humid month is June (74.9%).

Wind in American River is usually moderate. The windiest month is January, followed by February and December. January’s average wind speed of around 10.2 knots (11.7 MPH or 18.8 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 January and early February where average top sustained speeds reach 16.8 knots, which is considered a moderate breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in American River.

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 10.2 Gentle breeze 16.2 Significant breeze
Feb 10.1 Gentle breeze 15.5 Significant breeze
Mar 8.1 Gentle breeze 14.2 Significant breeze
Apr 6.9 Light breeze 13.2 Significant breeze
May 6.4 Light breeze 12.3 Significant breeze
Jun 7.1 Gentle breeze 12.6 Significant breeze
Jul 7.5 Gentle breeze 13.3 Significant breeze
Aug 7.5 Gentle breeze 14 Significant breeze
Sep 7.8 Gentle breeze 14.5 Significant breeze
Oct 7.9 Gentle breeze 14.4 Significant breeze
Nov 8.9 Gentle breeze 15 Significant breeze
Dec 8.9 Gentle breeze 15.2 Significant breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 51.1%
Feb 54.5%
Mar 59.1%
Apr 65.2%
May 73.6%
Jun 74.9%
Jul 74.1%
Aug 72.5%
Sep 68%
Oct 61.6%
Nov 56.4%
Dec 53.9%


Is it Safe to Travel to American River?

Our best data indicates this area is generally safe. As of Oct 07, 2019 there are no travel advisories or warnings for Australia; 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 Aug 22, 2019.


The Busiest and Least Crowded Months

The busiest month for tourism in American River, SA, Australia is February, followed by January 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 American River in November. 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 somewhat extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 66.7 in November means 66.7% of the tourists vs. February.



Overall American River Travel Experience by Season

Fall (March through May)

Humidity and temperatures combine to make this season feel moderate. Highs range from 79.9°F (26.6°C) and 63.3°F (17.4°C) with colder temperatures in the later months. Rain is rare with 2 to 6 days of significant precipitation per month. Fall is the second busiest for tourism, which makes it a good time for those looking for things to do.

Winter (June through August)

The middle-year months have cold weather with high temperatures that are brisk. These months see the most precipitation with 6 to 7 days of precipitation per month. June – August is fairly slow season for tourism in American River, so lodging and other accommodations may cost slightly less.

Spring (September through November)

Spring daily highs range from 77.2°F (25.1°C) and 63.1°F (17.3°C), which will feel comfortable given the humidity and wind. It rains or snows a normal amount: 2 to 3 days per month. Tourism is the slowest during these months due to the weather, so hotels may be affordably priced.

Summer (December through February)

Weather is perfect this time of year in American River to be enjoyable for warm weather travelers. The average high during this season is between 82.9°F (28.3°C) and 76.6°F (24.8°C). On average, it rains or snows a smalll amount: 1 to 2 times per month. These times of year are the busiest with tourists.


Best Times to TravelAustralia › American River, SA, Australia