Average Weather at Fillmore County Airport Minnesota, United States
At Fillmore County Airport, the summers are long, warm, and wet; the winters are freezing, snowy, and windy; and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 10°F to 80°F and is rarely below -10°F or above 88°F.
Based on the tourism score, the best time of year to visit Fillmore County Airport for warm-weather activities is from mid June to early September.
The warm season lasts for 4.0 months, from May 20 to September 19, with an average daily high temperature above 69°F. The hottest day of the year is July 19, with an average high of 80°F and low of 62°F.
The cold season lasts for 3.2 months, from November 29 to March 4, with an average daily high temperature below 35°F. The coldest day of the year is January 22, with an average low of 10°F and high of 24°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
Millerovo, Russia (5,431 miles away); Zangakatun, Armenia (6,088 miles); and Talghar, Kazakhstan (6,399 miles) are the far-away foreign places with temperatures most similar to Fillmore County Airport (view comparison).
At Fillmore County 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 Fillmore County Airport begins around June 3 and lasts for 4.6 months, ending around October 23. On July 28, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 70% of the time, and overcast or mostly cloudy 30% of the time.
The cloudier part of the year begins around October 23 and lasts for 7.3 months, ending around June 3. On February 3, 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
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days at Fillmore County Airport varies significantly throughout the year.
The wetter season lasts 6.0 months, from April 5 to October 6, with a greater than 26% chance of a given day being a wet day. The chance of a wet day peaks at 42% on June 10.
The drier season lasts 6.0 months, from October 6 to April 5. The smallest chance of a wet day is 9% on February 12.
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 Fillmore County Airport changes throughout the year.
Rain alone is the most common for 9.1 months, from March 3 to December 5. The highest chance of a day with rain alone is 42% on June 10.
Snow alone is the most common for 2.9 months, from December 5 to March 3. The highest chance of a day with snow alone is 9% on January 19.
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. Fillmore County Airport experiences extreme seasonal variation in monthly rainfall.
The rainy period of the year lasts for 9.6 months, from February 26 to December 14, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around June 18, with an average total accumulation of 4.3 inches.
The rainless period of the year lasts for 2.4 months, from December 14 to February 26. The least rain falls around January 22, with an average total accumulation of 0.1 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. Fillmore County Airport experiences some seasonal variation in monthly liquid-equivalent snowfall.
The snowy period of the year lasts for 5.5 months, from October 28 to April 12, 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 17, with an average total liquid-equivalent accumulation of 0.5 inches.
The snowless period of the year lasts for 6.5 months, from April 12 to October 28. The least snow falls around July 17, with an average total liquid-equivalent accumulation of 0.0 inches.
Average Liquid-Equivalent Monthly Snowfall
The length of the day at Fillmore County Airport varies significantly over the course of the year. In 2018, the shortest day is December 21, with 8 hours, 55 minutes of daylight; the longest day is June 21, with 15 hours, 27 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:26 AM on June 15, and the latest sunrise is 2 hours, 21 minutes later at 7:47 AM on November 3. The earliest sunset is at 4:31 PM on December 9, and the latest sunset is 4 hours, 23 minutes later at 8:54 PM on June 27.
Daylight saving time (DST) is observed at Fillmore County 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
Fillmore County Airport experiences significant seasonal variation in the perceived humidity.
The muggier period of the year lasts for 3.2 months, from June 8 to September 15, during which time the comfort level is muggy, oppressive, or miserable at least 9% of the time. The muggiest day of the year is July 21, with muggy conditions 35% of the time.
The least muggy day of the year is February 26, when muggy conditions are essentially unheard of.
Humidity Comfort Levels
The average hourly wind speed at Fillmore County Airport experiences significant seasonal variation over the course of the year.
The windier part of the year lasts for 8.0 months, from September 26 to May 24, with average wind speeds of more than 10.6 miles per hour. The windiest day of the year is March 23, with an average hourly wind speed of 12.9 miles per hour.
The calmer time of year lasts for 4.0 months, from May 24 to September 26. The calmest day of the year is August 3, with an average hourly wind speed of 8.2 miles per hour.
Average Wind Speed
The predominant average hourly wind direction at Fillmore County Airport varies throughout the year.
The wind is most often from the north for 2.5 months, from February 9 to April 25, with a peak percentage of 34% on March 8. The wind is most often from the south for 6.9 months, from April 25 to November 23, with a peak percentage of 43% on September 5. The wind is most often from the west for 2.5 months, from November 23 to February 9, with a peak percentage of 35% on January 1.
Best Time of Year to Visit
To characterize how pleasant the weather is at Fillmore County 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 Fillmore County Airport for general outdoor tourist activities is from mid June to early September, 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 Fillmore County Airport for hot-weather activities is from early July to early August, with a peak score in the third 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 at Fillmore County Airport typically lasts for 5.6 months (169 days), from around April 22 to around October 8, rarely starting before April 3 or after May 12, and rarely ending before September 21 or after October 29.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms at Fillmore County Airport should appear around April 25, only rarely appearing before April 13 or after May 11.
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 3.5 months, from May 6 to August 20, with an average daily incident shortwave energy per square meter above 5.9 kWh. The brightest day of the year is July 4, with an average of 7.0 kWh.
The darker period of the year lasts for 3.4 months, from October 30 to February 10, with an average daily incident shortwave energy per square meter below 2.7 kWh. The darkest day of the year is December 16, with an average of 1.6 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Fillmore County Airport are 43.676 deg latitude, -92.180 deg longitude, and 1,204 ft elevation.
The topography within 2 miles of Fillmore County Airport contains only modest variations in elevation, with a maximum elevation change of 338 feet and an average elevation above sea level of 1,175 feet. Within 10 miles contains only modest variations in elevation (545 feet). Within 50 miles contains significant variations in elevation (827 feet).
The area within 2 miles of Fillmore County Airport is covered by cropland (72%) and trees (28%), within 10 miles by cropland (85%) and trees (15%), and within 50 miles by cropland (79%) and trees (17%).
This report illustrates the typical weather at Fillmore County 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
Fillmore County 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 Rochester, Rochester International Airport; Decorah Municipal Airport; Winona Municipal Airport-Max Conrad Field; Dodge Center Airport; Charles City Municipal Airport; Austin Municipal Airport; La Crosse Municipal Airport; and Red Wing Regional Airport.
Time zones for aiports and weather stations are provided by AskGeo.com .