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Average Weather at McCall Airport Idaho, United States

At McCall Airport, the summers are short, warm, dry, and mostly clear and the winters are freezing, snowy, and partly cloudy. Over the course of the year, the temperature typically varies from 12°F to 80°F and is rarely below -4°F or above 88°F.

Climate Summary

freezingvery coldcoldcoolwarmcoolcoldfreezingJanFebMarAprMayJunJulAugSepOctNovDec82%82%34%34%clearovercastprecipitation: 3.1 inprecipitation: 3.1 in0.4 in0.4 inmuggy: 0%muggy: 0%0%0%drydrytourism score: 5.2tourism score: 5.20.00.0
Click on each chart for more information.

Based on the tourism score, the best time of year to visit McCall Airport for warm-weather activities is from early July to mid August.

Temperature

The warm season lasts for 2.8 months, from June 20 to September 14, with an average daily high temperature above 70°F. The hottest day of the year is August 2, with an average high of 80°F and low of 46°F.

The cold season lasts for 3.7 months, from November 16 to March 6, with an average daily high temperature below 38°F. The coldest day of the year is January 1, with an average low of 12°F and high of 27°F.

Average High and Low Temperature

The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Average Hourly Temperature

Average Hourly Temperature at McCall AirportJanFebMarAprMayJunJulAugSepOctNovDec12 AM4 AM8 AM12 PM4 PM8 PM12 AMfreezingfreezingvery coldvery coldcoldcoolwarmcoolcomfortable
The average hourly temperature, color coded into bands: frigid < 15°F < freezing < 32°F < very cold < 45°F < cold < 55°F < cool < 65°F < comfortable < 75°F < warm < 85°F < hot < 95°F < sweltering. The shaded overlays indicate night and civil twilight.

Anton, Bulgaria (5,914 miles away); Kale, Turkey (6,426 miles); and Başkale, Turkey (6,581 miles) are the far-away foreign places with temperatures most similar to McCall Airport (view comparison).

Clouds

At McCall Airport, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.

The clearer part of the year at McCall Airport begins around June 13 and lasts for 3.9 months, ending around October 11. On July 28, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 82% of the time, and overcast or mostly cloudy 18% of the time.

The cloudier part of the year begins around October 11 and lasts for 8.1 months, ending around June 13. On January 10, the cloudiest day of the year, the sky is overcast or mostly cloudy 66% of the time, and clear, mostly clear, or partly cloudy 34% of the time.

Cloud Cover Categories

Cloud Cover Categories at McCall AirportclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jul 2882%Jul 2882%Jan 1034%Jan 1034%Jun 1357%Jun 1357%Oct 1158%Oct 1158%clearpartly cloudymostly cloudyovercastmostly clear
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds: clear < 20% < mostly clear < 40% < partly cloudy < 60% < mostly cloudy < 80% < overcast.

Precipitation

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days at McCall Airport varies throughout the year.

The wetter season lasts 7.9 months, from October 23 to June 20, with a greater than 21% chance of a given day being a wet day. The chance of a wet day peaks at 36% on December 1.

The drier season lasts 4.1 months, from June 20 to October 23. The smallest chance of a wet day is 6% on July 26.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation at McCall Airport changes throughout the year.

Rain alone is the most common for 7.6 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 3.1 months, from November 21 to February 22. The highest chance of a day with snow alone is 20% on December 27.

Mixed snow and rain is the most common for 1.3 months, from February 22 to April 4. The highest chance of a day with mixed snow and rain is 15% on March 17.

Daily Chance of Precipitation

Daily Chance of Precipitation at McCall AirportsnowmixedrainsnowJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Dec 136%Dec 136%Jul 266%Jul 266%Feb 2231%Feb 2231%Apr 428%Apr 428%Oct 2321%Oct 2321%Jun 2021%Jun 2021%snowmixedrain
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).

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 Airport 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

Average Monthly Rainfall at McCall AirportrainrainJanFebMarAprMayJunJulAugSepOctNovDec0.0 in0.5 in1.0 in1.5 in2.0 in2.5 in3.0 in3.5 in4.0 inMay 231.9 inMay 231.9 inAug 20.4 inAug 20.4 inNov 181.7 inNov 181.7 inApr 91.4 inApr 91.4 inJan 280.8 inJan 280.8 in
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

We report snowfall in liquid-equivalent terms. The actual depth of new snowfall is typically between 5 and 10 times the liquid-equivalent amount, assuming the ground is frozen. 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 the snowfall accumulated over a sliding 31-day period centered around each day of the year. McCall Airport experiences significant seasonal variation in monthly liquid-equivalent snowfall.

The snowy period of the year lasts for 6.7 months, from October 13 to May 3, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around December 30, with an average total liquid-equivalent accumulation of 1.9 inches.

The snowless period of the year lasts for 5.3 months, from May 3 to October 13. The least snow falls around August 2, with an average total liquid-equivalent accumulation of 0.0 inches.

Average Liquid-Equivalent Monthly Snowfall

Average Liquid-Equivalent Monthly Snowfall at McCall AirportsnowsnowJanFebMarAprMayJunJulAugSepOctNovDec0.0 in0.5 in1.0 in1.5 in2.0 in2.5 in3.0 in3.5 in4.0 inDec 301.9 inDec 301.9 inAug 20.0 inAug 20.0 inOct 130.1 inOct 130.1 inMay 30.1 inMay 30.1 in
The average liquid-equivalent snowfall (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 rainfall.

Sun

The length of the day at McCall Airport varies significantly over the course of the year. In 2018, the shortest day is December 21, with 8 hours, 47 minutes of daylight; the longest day is June 21, with 15 hours, 36 minutes of daylight.

Hours of Daylight and Twilight

Hours of Daylight and Twilight at McCall AirportJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 7 minMar 2012 hr, 7 minMar 2015 hr, 36 minJun 2115 hr, 36 minJun 2112 hr, 10 minSep 2212 hr, 10 minSep 228 hr, 47 minDec 218 hr, 47 minDec 21nightnightday
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The earliest sunrise is at 5:57 AM on June 15, and the latest sunrise is 2 hours, 28 minutes later at 8:25 AM on November 3. The earliest sunset is at 5:03 PM on December 10, and the latest sunset is 4 hours, 32 minutes later at 9:34 PM on June 26.

Daylight saving time (DST) is observed at McCall Airport during 2018, starting in the spring on March 11, lasting 7.8 months, and ending in the fall on November 4.

Sunrise & Sunset with Twilight and Daylight Saving Time

Sunrise & Sunset with Twilight and Daylight Saving Time at McCall AirportJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 155:57 AMJun 155:57 AM9:34 PMJun 269:34 PMJun 26Dec 105:03 PMDec 105:03 PM8:25 AMNov 38:25 AMNov 3Mar 11DSTMar 11DSTDSTNov 4DSTNov 4daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of the year 2018. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. The transitions to and from daylight saving time are indicated by the 'DST' labels.

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 at McCall Airport, 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

Humidity Comfort Levels at McCall AirportJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Jan 70%Jan 70%Jul 90%Jul 90%drydry
The percentage of time spent at various humidity comfort levels, categorized by dew point: dry < 55°F < comfortable < 60°F < humid < 65°F < muggy < 70°F < oppressive < 75°F < miserable.

Wind

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed at McCall Airport does not vary significantly over the course of the year, remaining within 0.4 miles per hour of 4.6 miles per hour throughout.

Average Wind Speed

Average Wind Speed at McCall AirportJanFebMarAprMayJunJulAugSepOctNovDec0 mph1 mph2 mph3 mph4 mph5 mph6 mph7 mphDec 15.0 mphDec 15.0 mphJun 244.2 mphJun 244.2 mph
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The predominant average hourly wind direction at McCall Airport varies throughout the year.

The wind is most often from the north for 1.5 months, from April 25 to June 11, with a peak percentage of 33% on May 22. The wind is most often from the west for 3.4 months, from June 11 to September 24, with a peak percentage of 32% on June 22. The wind is most often from the south for 7.0 months, from September 24 to April 25, with a peak percentage of 63% on January 1.

Wind Direction

Wind Direction at McCall AirportSNWSJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%westsoutheastnorth
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions (north, east, south, and west), excluding hours in which the mean wind speed is less than 1 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Best Time of Year to Visit

To characterize how pleasant the weather is at McCall Airport throughout the year, we compute two travel scores.

The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit McCall Airport for general outdoor tourist activities is from early July to mid August, with a peak score in the last week of July.

Tourism Score

Tourism Score at McCall AirportJanFebMarAprMayJunJulAugSepOctNovDec02468105.25.20.00.0 precipitationprecipitationcloudscloudstemperaturetemperaturetourism score
The tourism score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit McCall Airport for hot-weather activities is from mid July to mid August, with a peak score in the last week of July.

Beach/Pool Score

Beach/Pool Score at McCall AirportJanFebMarAprMayJunJulAugSepOctNovDec02468102.72.70.00.0 precipitationprecipitationcloudscloudstemperaturetemperaturebeach/pool score
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Methodology

For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.

Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.

Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.

Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.

Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.

Growing Season

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

The growing season at McCall Airport typically lasts for 2.5 months (76 days), from around June 21 to around September 5, rarely starting before May 30 or after July 17, and rarely ending before August 13 or after September 22.

Time Spent in Various Temperature Bands and the Growing Season

Time Spent in Various Temperature Bands and the Growing Season at McCall AirportJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jun 2150%Jun 2150%Sep 550%Sep 550%Jul 1790%Jul 1790%Aug 1390%Aug 1390%May 3010%May 3010%Sep 2210%Sep 2210%0%Feb 230%Feb 23frigidfreezingvery coldcoldcoolcomfortablehot
The percentage of time spent in various temperature bands: frigid < 15°F < freezing < 32°F < very cold < 45°F < cold < 55°F < cool < 65°F < comfortable < 75°F < warm < 85°F < hot < 95°F < sweltering. The black line is the percentage chance that a given day is within the growing season.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

Based on growing degree days alone, the first spring blooms at McCall Airport should appear around May 22, only rarely appearing before May 7 or after June 10.

Growing Degree Days

Growing Degree Days at McCall AirportJanFebMarAprMayJunJulAugSepOctNovDec0°F200°F400°F600°F800°F1,000°F1,200°F1,400°F1,600°FMay 2290°FMay 2290°FAug 10900°FAug 10900°FDec 311,410°FDec 311,410°F
The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

Solar Energy

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy experiences extreme seasonal variation over the course of the year.

The brighter period of the year lasts for 3.1 months, from May 19 to August 21, with an average daily incident shortwave energy per square meter above 6.7 kWh. The brightest day of the year is July 7, with an average of 8.0 kWh.

The darker period of the year lasts for 3.5 months, from October 28 to February 14, with an average daily incident shortwave energy per square meter below 2.8 kWh. The darkest day of the year is December 16, with an average of 1.5 kWh.

Average Daily Incident Shortwave Solar Energy

Average Daily Incident Shortwave Solar Energy at McCall AirportbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh1 kWh2 kWh3 kWh4 kWh5 kWh6 kWh7 kWh8 kWh9 kWh10 kWhJul 78.0 kWhJul 78.0 kWhDec 161.5 kWhDec 161.5 kWhMay 196.7 kWhMay 196.7 kWhAug 216.7 kWhAug 216.7 kWhOct 282.8 kWhOct 282.8 kWhFeb 142.8 kWhFeb 142.8 kWh
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

Topography

For the purposes of this report, the geographical coordinates of McCall Airport are 44.894 deg latitude, -116.100 deg longitude, and 5,043 ft elevation.

The topography within 2 miles of McCall Airport contains significant variations in elevation, with a maximum elevation change of 518 feet and an average elevation above sea level of 5,052 feet. Within 10 miles contains significant variations in elevation (4,505 feet). Within 50 miles also contains extreme variations in elevation (8,445 feet).

The area within 2 miles of McCall Airport is covered by shrubs (44%), sparse vegetation (34%), and water (11%), within 10 miles by trees (34%) and shrubs (28%), and within 50 miles by shrubs (36%) and trees (35%).

Data Sources

This report illustrates the typical weather at McCall Airport, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Temperature and Dew Point

McCall Airport has a weather station that reported reliably enough during the analysis period that we have included it in our network. When available, historical temperature and dew point measurements are taken directly from this weather station. These records are obtained from NOAA's Integrated Surface Hourly data set, falling back on ICAO METAR records as required.

In the case of missing or erroneous measurements from this station, we fall back on records from nearby stations, adjusted according to typical seasonal and diurnal intra-station differences. For a given day of the year and hour of the day, the fallback station is selected to minimize the prediction error over the years for which there are measurements for both stations.

The stations on which we may fall back include but are not limited to Idaho County Airport; Ontario Municipal Airport; Boise Air Terminal; Caldwell Industrial Airport; Nampa Municipal Airport; Stanley, Stanley Ranger Station; Baker Municipal Airport; and Challis Airport.

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , by Jean Meeus.

All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.

Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.

Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .

Time zones for aiports and weather stations are provided by AskGeo.com .

Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.