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Average Weather in McCall Idaho

The Best Rental Cabins, Homes, Lakefront Estates and Romantic Getaways in McCall, Donnelly, Cascade & New Meadows

Weather forecast for McCall is fairly straight forward! Whether you are making plans on Monday night or Sunday night for your short term vacation rental stay, looking at the annual weather patterns in McCall can help make planning your time spent up here match your ideal expectations for your trip. Valley County has the splendor of all 4 seasons. The summer season is short but sweet, a tad on the warmer side, mostly dry, low dew point, and usually clear blue skies.  Temps cool at night for the short Fall season and transitions quickly into winter.

You can expect precip during Fall, with times of heavy rain, and occasional showers. Fall colors in McCall last a few weeks before the mountain snow starts to gently fall. The winters are long, mighty cold, freezing even, snow likely during most weeks, and partly cloudy. Over the course of the year, the temperature typically varies from 5°F to 85°F
and is rarely below -10°F or above 90°F.

Quick McCall Forecast

MCCALL WEATHER

Temperature in McCall

If you are looking at the current weather in McCall, that can change in a heartbeat, so plan your vacation accordingly, we always recommend purchasing travel insurance to help insulate against any unforeseen inclement weather and you can make adjustments to your trip to the area. What is considered the warm season generally lasts nearly 3 months, from June 20 to September 14, with an average daily high temperature above 70°F. The hottest day of the year is historically July 31, with an average high of 80°F and low of 46°F.

Spring and Fall are considered the shoulder season here in McCall, where temps are transitioning between the primary seasons with drastic fluctuations in mean temperature from day to night. Don’t be surprised by a 50 degree swing during the shoulder season, so pack with layers in mind and keep a healthy attitude when it gets bitter cold, it’s hard not to complain when you are wearing a shorts and a t-shirt when it 33 degrees outside.
Some of us love the chilly frost, enjoying the cold Saturday night in the hot tub, but that definition of cold is subjective. Up here in Central Idaho, situated just above 5000ft, the cold season lasts for about 6 months, give or take, from Early November to late May. Snow is even common few times in June, with an average daily high temperature below 38°F. The coldest day of the year is January 1, with an average low of 10°F and high of 32°F. And in the extreme, -20 is not uncommon. When in doubt, check the weather report before your group heads up for the winter adventure.

Best Time of Year to Visit

The best time of year to visit McCall and Valley County Idaho will depend entirely on your goals for this moment in time. You might not know this about McCall, BUT this is the mecca of all things outdoors. Truly a rare and unique place on earth, there are a lot of things to do in McCall, located in the Mountain Timezone, that allows you to maximize your enjoyment of your time in the area depending on what you want to experience. Summer in McCall is ideal for boating, water skiing, and soaking in the rays of the sun. Fall and Spring are great for white water rafting, fishing, hiking, biking, hunting, swimming, rock climbing when its a bit cooler. Winter in McCall is unparalleled due to the super dry, low humidity, and abundance of high snowfall makes McCall and the surrounding areas unique destination for Winter Sports Activities. Central Idaho is ideal for everyone that loves Nordic cross country skiing, snowshoeing, ice fishing, snowboarding, and snowmobiling.

Precipitation Rain and Snow Fall

The chance of wet days, rain, snow, or a combination of both in McCall varies throughout the year.  Precipitation is challenging to forecast in Valley County, and can change from minute to minute. There are two weather stations near enough to the area to have a fairly accurate meteorological forecast of what the weather report holds to be true.

The rainy season duration is typically 8 months long, from October 23 to June 20, with a greater than 21% chance of having rain during this time span. The greatest chance of a rain or snow day peaks on December 1 at a 36%.
The drier season lasts nearly 4 months, from June 20 to October 23. The smallest chance of a wet day is 6% on July 26, a great day to be out on the wake boat, surfing Payette Lake or Lake Cascade.
Rain alone, not hail, or mixed with sleet is the most common for just over 7 months, from April 4 to November 21. The highest chance of a day with rain alone is 28% on May 29.
Snow alone is the most common for 3 months, from Mid November to February 21. But like anything, we have seen it rain just after it snowed, and vice a versa. The highest chance of a day with snow alone is 20% on December 27.
Mixed snow and rain is the most common for 1.4 months, from February 21 to April 4. The highest chance of a day with mixed snow and rain is 15% on March 17.

Daily Chance of Precipitation

The chance of precipitation varies from day to day, in which various types of precipitation are observed: rain alone, snow alone, and mixed both rain and snow fell in the same day. So, like anything else in life, its a crapshoot, so we say, “Prepare for anything, and then have fun.”

Rainfall

To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. McCall experiences some seasonal variation in monthly rainfall.

The rainy period of the year lasts for 11 months, from August 19 to July 16, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around May 23, with an average total accumulation of 1.9 inches.
The rainless period of the year lasts for 1.1 months, from July 16 to August 19. The least rain falls around August 2, with an average total accumulation of 0.4 inches.

Average Monthly Rainfall

The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average liquid-equivalent snowfall.

Snowfall

The actual depth of new snowfall is typically between 5 and 10 times the liquid-equivalent amount. Which means that if it would rain 1″ you will potentially get 5″ to 10″ of snow for that H20 equivalent in liquid form. Colder, drier snow tends to be on the higher end of that range and warmer, wetter snow on the lower end.

As with rainfall, we consider new snow accumulation over a sliding 31-day period centered around each day of the year. The percent chance of snow showers in McCall experiences significant seasonal variation in monthly snowfall according to NOAA, National Oceanic and Atmospheric organization.
The snowy period of the year lasts for a grueling 6 months, starting in early November to the end of May, with a sliding 31-day liquid-equivalent snowfall of at least .5″ to 1 inches. The most snow falls during the 31 days centered around December 30, with an average total liquid-equivalent accumulation of 1.9 inches.

UV Index

Some of us are prone to greater degrees of UV exposure, and knowing what the UV index for the area will help you prepare for your time in these higher elevations. Sun Block and sun Screen only works when you apply them, so make sure you pack plenty of your UV blocking protection and reapply regularly.

Hours of Daylight and Twilight

The earliest sunrise is at 5:57 AM on June 15, and the latest sunrise is 2 hours, 33 minutes later at 8:30 AM on November 6. The earliest sunset is at 5:02 PM on December 9, and the latest sunset is 4 hours, 32 minutes later at 9:34 PM on June 26.

Humidity

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

The perceived humidity level in McCall, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, remaining a virtually constant 0% throughout.

Humidity Comfort Levels

Prepare yourself during your vacation to experience super dry conditions, which ball all accounts is 0% percent for most of the entire year. Great for Snow, ideal skiers seeking powder days, and blue skies. Consider bringing a humidifier with you to add extra moisture while you are staying at one of our vacation rental homes here in McCall.

Wind

Another unique characteristic of McCall and Valley County is the average low hourly wind speed here does not vary significantly over the course of the year, remaining within 0.5 miles per hour of 4.6 miles per hour year round. Mind you, Valley County does get the crazy gusts of wind that will last several hours, and naturally storms that blow-in and down powerlines in the process are all par for the course of life.

Wind Direction

The direction is fairly consistent and steady generally blowing South, South East during the winter months, and has more a even split of the percentage of hours in which the mean wind direction is from each of the four cardinal wind directions. (North East (NE), South South East (SSE), South West (SW), North West (NW), East South East (ESE) and the ever gently breeze we call the south wind).

Cloud Coverage

In McCall, Clouds come, and Clouds go, and sometimes, Clouds will stay and put a damper on your vacation fun. The average percentage of the sky covered by clouds varies greatly and the seasonal variation over the course of the year where you will have perfectly clear skies, and then shortly thereafter have clouds roll in and obscure the heavens above. Only minutes later to vanish and leave behind crystal clear sparkles of the stars above.

McCall Idaho is designated as one of the countries Dark Night Locations, ideal for those aspiring astronomers, or anyone just plain interested in seeing the milky way galaxy with the naked eye. The clearer part of the year in McCall Idaho begins around June 13 and lasts for 4 months, ending around October 11.  The clearest day of the year is historically on July 28, where the sky is clear, mostly clear, or partly cloudy 82% of the time, and overcast or mostly cloudy 18% of the time. So grab your telescope and aim for the stars.
The cloudier part of the year begins around October 11 and lasts for about 8 months, ending around June 13. On January 10, the cloudiest day of the year, the sky is overcast or mostly cloudy 67% of the time, and clear, mostly clear, or partly cloudy 33% of the time, but like anything, during the cold weather, the sky at night is so crisp that it seems like you can pluck the stars right out of the night sky.
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