Average Weather in April in Humboldt Iowa, United States
Daily high temperatures increase by 13°F, from 53°F to 66°F, rarely falling below 37°F or exceeding 81°F.
Daily low temperatures increase by 11°F, from 34°F to 45°F, rarely falling below 23°F or exceeding 57°F.
For reference, on July 5, the hottest day of the year, temperatures in Humboldt typically range from 64°F to 84°F, while on January 20, the coldest day of the year, they range from 12°F to 28°F.
Average High and Low Temperature in April
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on April. The horizontal axis is the day, 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 April
The month of April in Humboldt experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 50% throughout the month.
The clearest day of the month is April 30, with clear, mostly clear, or partly cloudy conditions 51% of the time.
For reference, on December 29, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 56%, while on July 28, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 72%.
Cloud Cover Categories in April
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Humboldt, the chance of a wet day over the course of April is very rapidly increasing, starting the month at 23% and ending it at 35%.
For reference, the year's highest daily chance of a wet day is 44% on June 7, and its lowest chance is 9% on January 12.
Over the course of April in Humboldt, the chance of a day with only rain increases from 20% to 35%, the chance of a day with mixed snow and rain decreases from 2% to 0%, and the chance of a day with only snow remains an essentially constant 0% throughout.
Probability of Precipitation in April
The average sliding 31-day rainfall during April in Humboldt is rapidly increasing, starting the month at 2.1 inches, when it rarely exceeds 3.6 inches or falls below 0.8 inches, and ending the month at 3.3 inches, when it rarely exceeds 5.1 inches or falls below 1.6 inches.
Average Monthly Rainfall in April
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. As with rainfall, we consider the liquid-equivalent snowfall accumulated over a sliding 31-day period centered around each day.
The average sliding 31-day liquid-equivalent snowfall during April in Humboldt is essentially constant, remaining about 0.1 inches throughout, and rarely exceeding 0.4 inches or falling below -0.0 inches.
Average Monthly Liquid-Equivalent Snowfall in April
Over the course of April in Humboldt, the length of the day is rapidly increasing. From the start to the end of the month, the length of the day increases by 1 hour, 19 minutes, implying an average daily increase of 2 minutes, 44 seconds, and weekly increase of 19 minutes, 11 seconds.
The shortest day of the month is April 1, with 12 hours, 44 minutes of daylight and the longest day is April 30, with 14 hours, 4 minutes of daylight.
Hours of Daylight and Twilight in April
The latest sunrise of the month in Humboldt is 6:58 AM on April 1 and the earliest sunrise is 46 minutes earlier at 6:12 AM on April 30.
The earliest sunset is 7:43 PM on April 1 and the latest sunset is 33 minutes later at 8:16 PM on April 30.
Daylight saving time is observed in Humboldt during 2018, but it neither starts nor ends during April, so the entire month is in daylight saving time.
For reference, on June 21, the longest day of the year, the Sun rises at 5:38 AM and sets 15 hours, 20 minutes later, at 8:58 PM, while on December 21, the shortest day of the year, it rises at 7:43 AM and sets 9 hours, 2 minutes later, at 4:46 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in April
The chance that a given day will be muggy in Humboldt is essentially constant during April, remaining around 0% throughout.
For reference, on July 21, the muggiest day of the year, there are muggy conditions 47% of the time, while on November 3, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in April
The average hourly wind speed in Humboldt is gradually decreasing during April, decreasing from 13.4 miles per hour to 12.9 miles per hour over the course of the month.
For reference, on April 9, the windiest day of the year, the daily average wind speed is 13.4 miles per hour, while on August 3, the calmest day of the year, the daily average wind speed is 8.3 miles per hour.
The highest daily average wind speed during April is 13.4 miles per hour on April 9.
Average Wind Speed in April
Wind Direction in April
The growing season in Humboldt typically lasts for 5.5 months (166 days), from around April 24 to around October 7, rarely starting before April 6 or after May 12, and rarely ending before September 20 or after October 25.
During April in Humboldt, the chance that a given day is within the growing season is very rapidly increasing rising from 5% to 67% over the course of the month.
Time Spent in Various Temperature Bands and the Growing Season in April
The average accumulated growing degree days in Humboldt are gradually increasing during April, increasing by 134°F, from 40°F to 174°F, over the course of the month.
Growing Degree Days in April
The average daily incident shortwave solar energy in Humboldt is increasing during April, rising by 1.0 kWh, from 4.8 kWh to 5.8 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in April
For the purposes of this report, the geographical coordinates of Humboldt are 42.721 deg latitude, -94.215 deg longitude, and 1,122 ft elevation.
The topography within 2 miles of Humboldt contains only modest variations in elevation, with a maximum elevation change of 115 feet and an average elevation above sea level of 1,107 feet. Within 10 miles also contains only modest variations in elevation (194 feet). Within 50 miles contains only modest variations in elevation (692 feet).
The area within 2 miles of Humboldt is covered by cropland (83%) and artificial surfaces (17%), within 10 miles by cropland (99%), and within 50 miles by cropland (98%).
This report illustrates the typical weather in Humboldt year round, 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 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Humboldt.
For each station, the records are corrected for the elevation difference between that station and Humboldt 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 Humboldt is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Humboldt and a given station.
The stations contributing to this reconstruction are: Fort Dodge Municipal Airport (55%, 19 kilometers, south); Clarion Municipal Airport (20%, 37 kilometers, east); Algona Municipal Airport (18%, 40 kilometers, north); and Storm Lake Municipal Airport (6%, 85 kilometers, west).
Time zones for aiports and weather stations are provided by AskGeo.com .