Average Weather in Filer Idaho, United States
In Filer, the summers are hot and mostly clear, the winters are very cold and partly cloudy, and it is dry year round. Over the course of the year, the temperature typically varies from 23°F to 90°F and is rarely below 9°F or above 97°F.
Based on the tourism score, the best time of year to visit Filer for warm-weather activities is from late June to late August.
The hot season lasts for 3.0 months, from June 13 to September 12, with an average daily high temperature above 79°F. The hottest day of the year is July 26, with an average high of 90°F and low of 62°F.
The cold season lasts for 3.1 months, from November 20 to February 24, with an average daily high temperature below 46°F. The coldest day of the year is December 30, with an average low of 23°F and high of 35°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 Filer, 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 Filer begins around June 10 and lasts for 4.1 months, ending around October 14. On July 29, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 83% of the time, and overcast or mostly cloudy 17% of the time.
The cloudier part of the year begins around October 14 and lasts for 7.9 months, ending around June 10. On March 2, the cloudiest day of the year, the sky is overcast or mostly cloudy 55% of the time, and clear, mostly clear, or partly cloudy 45% 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 Filer varies throughout the year.
The wetter season lasts 7.9 months, from October 16 to June 13, with a greater than 12% chance of a given day being a wet day. The chance of a wet day peaks at 19% on May 3.
The drier season lasts 4.1 months, from June 13 to October 16. The smallest chance of a wet day is 5% on July 5.
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 throughout the year is rain alone, with a peak probability of 19% on May 3.
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. Filer experiences some seasonal variation in monthly rainfall.
The rainy period of the year lasts for 8.9 months, from September 25 to June 20, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around May 16, with an average total accumulation of 1.1 inches.
The rainless period of the year lasts for 3.1 months, from June 20 to September 25. The least rain falls around July 14, with an average total accumulation of 0.2 inches.
Average Monthly Rainfall
The sliding 31-day liquid-equivalent quantity of snowfall in Filer does not vary significantly over the course of the year, staying within 0.1 inches of 0.1 inches throughout.
Average Liquid-Equivalent Monthly Snowfall
The length of the day in Filer varies significantly over the course of the year. In 2018, the shortest day is December 21, with 9 hours, 3 minutes of daylight; the longest day is June 21, with 15 hours, 19 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 6:00 AM on June 15, and the latest sunrise is 2 hours, 15 minutes later at 8:14 AM on November 3. The earliest sunset is at 5:05 PM on December 8, and the latest sunset is 4 hours, 15 minutes later at 9:20 PM on June 27.
Daylight saving time (DST) is observed in Filer 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 Filer, 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 Filer experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 6.7 months, from November 3 to May 25, with average wind speeds of more than 8.6 miles per hour. The windiest day of the year is March 28, with an average hourly wind speed of 9.8 miles per hour.
The calmer time of year lasts for 5.3 months, from May 25 to November 3. The calmest day of the year is August 11, with an average hourly wind speed of 7.4 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Filer is from the west throughout the year.
Best Time of Year to Visit
To characterize how pleasant the weather is in Filer 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 Filer for general outdoor tourist activities is from late June to late 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 Filer for hot-weather activities is from mid 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 Filer typically lasts for 5.6 months (170 days), from around April 30 to around October 16, rarely starting before April 7 or after May 22, and rarely ending before September 27 or after November 6.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms in Filer should appear around April 14, only rarely appearing before March 30 or after May 3.
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 3.1 months, from May 15 to August 19, with an average daily incident shortwave energy per square meter above 7.0 kWh. The brightest day of the year is July 1, with an average of 8.3 kWh.
The darker period of the year lasts for 3.5 months, from October 31 to February 14, with an average daily incident shortwave energy per square meter below 3.1 kWh. The darkest day of the year is December 21, with an average of 1.8 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Filer are 42.570 deg latitude, -114.608 deg longitude, and 3,763 ft elevation.
The topography within 2 miles of Filer contains only modest variations in elevation, with a maximum elevation change of 285 feet and an average elevation above sea level of 3,763 feet. Within 10 miles contains only modest variations in elevation (1,759 feet). Within 50 miles contains very significant variations in elevation (6,335 feet).
The area within 2 miles of Filer is covered by cropland (94%), within 10 miles by cropland (79%), and within 50 miles by shrubs (58%) and cropland (24%).
This report illustrates the typical weather in Filer, 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 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Filer.
For each station, the records are corrected for the elevation difference between that station and Filer 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 Filer is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Filer and a given station.
The stations contributing to this reconstruction are: Twin Falls Airport (57%, 14 kilometers, southeast); Jerome County Airport (40%, 21 kilometers, northeast); and Mountain Home Air Force Base (3.4%, 116 kilometers, northwest).
Time zones for aiports and weather stations are provided by AskGeo.com .