Average Weather in Saint Anthony Idaho, United States
In Saint Anthony, the summers are 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 85°F and is rarely below -5°F or above 92°F.
Based on the tourism score, the best time of year to visit Saint Anthony for warm-weather activities is from early July to mid August.
The warm season lasts for 3.0 months, from June 13 to September 15, with an average daily high temperature above 73°F. The hottest day of the year is July 31, with an average high of 85°F and low of 52°F.
The cold season lasts for 3.4 months, from November 20 to March 2, 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 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
In Saint Anthony, 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 in Saint Anthony begins around June 10 and lasts for 4.1 months, ending around October 14. On July 26, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 81% of the time, and overcast or mostly cloudy 19% of the time.
The cloudier part of the year begins around October 14 and lasts for 7.9 months, ending around June 10. On January 4, the cloudiest day of the year, the sky is overcast or mostly cloudy 61% of the time, and clear, mostly clear, or partly cloudy 39% of the time.
Cloud Cover Categories
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Saint Anthony varies throughout the year.
The wetter season lasts 7.3 months, from November 8 to June 16, with a greater than 22% chance of a given day being a wet day. The chance of a wet day peaks at 31% on May 25.
The drier season lasts 4.7 months, from June 16 to November 8. The smallest chance of a wet day is 13% on July 4.
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 in Saint Anthony changes throughout the year.
Rain alone is the most common for 9.5 months, from February 16 to December 2. The highest chance of a day with rain alone is 31% on May 25.
Snow alone is the most common for 2.5 months, from December 2 to February 16. The highest chance of a day with snow alone is 13% on December 28.
Daily Chance of Precipitation
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. Saint Anthony experiences some seasonal variation in monthly rainfall.
The rainy period of the year lasts for 11 months, from February 11 to January 12, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around May 24, with an average total accumulation of 1.8 inches.
The rainless period of the year lasts for 1.0 months, from January 12 to February 11. The least rain falls around January 31, with an average total accumulation of 0.4 inches.
Average Monthly Rainfall
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. Saint Anthony experiences some seasonal variation in monthly liquid-equivalent snowfall.
The snowy period of the year lasts for 5.5 months, from October 29 to April 14, 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 31, with an average total liquid-equivalent accumulation of 0.8 inches.
The snowless period of the year lasts for 6.5 months, from April 14 to October 29. The least snow falls around July 20, with an average total liquid-equivalent accumulation of 0.0 inches.
Average Liquid-Equivalent Monthly Snowfall
The length of the day in Saint Anthony varies significantly over the course of the year. In 2018, the shortest day is December 21, with 8 hours, 53 minutes of daylight; the longest day is June 21, with 15 hours, 29 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:43 AM on June 15, and the latest sunrise is 2 hours, 23 minutes later at 8:05 AM on November 3. The earliest sunset is at 4:48 PM on December 9, and the latest sunset is 4 hours, 25 minutes later at 9:13 PM on June 26.
Daylight saving time (DST) is observed in Saint Anthony 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
The perceived humidity level in Saint Anthony, 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
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Saint Anthony experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 2.8 months, from February 28 to May 21, with average wind speeds of more than 7.3 miles per hour. The windiest day of the year is March 29, with an average hourly wind speed of 8.1 miles per hour.
The calmer time of year lasts for 9.2 months, from May 21 to February 28. The calmest day of the year is January 2, with an average hourly wind speed of 6.5 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Saint Anthony is from the south throughout the year.
Best Time of Year to Visit
To characterize how pleasant the weather is in Saint Anthony 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 Saint Anthony for general outdoor tourist activities is from early July to mid August, with a peak score in the last week of July.
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 Saint Anthony for hot-weather activities is from early July to mid August, with a peak score in the last week of July.
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.
The growing season in Saint Anthony typically lasts for 4.2 months (129 days), from around May 17 to around September 23, rarely starting before April 29 or after June 8, and rarely ending before September 4 or after October 11.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms in Saint Anthony should appear around May 5, only rarely appearing before April 21 or after May 21.
Growing Degree Days
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 2.9 months, from May 21 to August 19, with an average daily incident shortwave energy per square meter above 6.9 kWh. The brightest day of the year is July 2, with an average of 8.2 kWh.
The darker period of the year lasts for 3.5 months, from October 29 to February 12, with an average daily incident shortwave energy per square meter below 3.0 kWh. The darkest day of the year is December 18, with an average of 1.7 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Saint Anthony are 43.966 deg latitude, -111.682 deg longitude, and 4,970 ft elevation.
The topography within 2 miles of Saint Anthony contains only modest variations in elevation, with a maximum elevation change of 108 feet and an average elevation above sea level of 4,967 feet. Within 10 miles contains only modest variations in elevation (1,273 feet). Within 50 miles contains very significant variations in elevation (9,058 feet).
The area within 2 miles of Saint Anthony is covered by shrubs (39%), cropland (38%), and grassland (19%), within 10 miles by cropland (50%) and shrubs (37%), and within 50 miles by shrubs (44%) and trees (23%).
This report illustrates the typical weather in Saint Anthony, 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
There are 2 weather stations near enough to contribute to our estimation of the temperature and dew point in Saint Anthony.
For each station, the records are corrected for the elevation difference between that station and Saint Anthony according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
The estimated value at Saint Anthony is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Saint Anthony and a given station.
Time zones for aiports and weather stations are provided by AskGeo.com .