Average Weather in April in Saint Joseph Missouri, United States
Daily high temperatures increase by 10°F, from 61°F to 71°F, rarely falling below 44°F or exceeding 83°F.
Daily low temperatures increase by 10°F, from 39°F to 49°F, rarely falling below 27°F or exceeding 61°F.
For reference, on July 20, the hottest day of the year, temperatures in Saint Joseph typically range from 68°F to 88°F, while on January 6, the coldest day of the year, they range from 19°F to 37°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 Saint Joseph experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 46% throughout the month.
The clearest day of the month is April 17, with clear, mostly clear, or partly cloudy conditions 56% of the time.
For reference, on February 12, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 52%, while on August 27, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 72%.
Cloud Cover Categories in April
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. In Saint Joseph, the chance of a wet day over the course of April is very rapidly increasing, starting the month at 27% and ending it at 35%.
For reference, the year's highest daily chance of a wet day is 44% on June 8, and its lowest chance is 8% on January 12.
Over the course of April in Saint Joseph, the chance of a day with only rain increases from 25% to 35%, the chance of a day with mixed snow and rain remains an essentially constant 1% throughout, 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 Saint Joseph is rapidly increasing, starting the month at 2.5 inches, when it rarely exceeds 4.0 inches or falls below 1.1 inches, and ending the month at 3.9 inches, when it rarely exceeds 6.5 inches or falls below 1.6 inches.
Average Monthly Rainfall in April
Over the course of April in Saint Joseph, 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, 12 minutes, implying an average daily increase of 2 minutes, 28 seconds, and weekly increase of 17 minutes, 16 seconds.
The shortest day of the month is April 1, with 12 hours, 40 minutes of daylight and the longest day is April 30, with 13 hours, 51 minutes of daylight.
Hours of Daylight and Twilight in April
The latest sunrise of the month in Saint Joseph is 7:03 AM on April 1 and the earliest sunrise is 42 minutes earlier at 6:21 AM on April 30.
The earliest sunset is 7:43 PM on April 1 and the latest sunset is 29 minutes later at 8:12 PM on April 30.
Daylight saving time is observed in Saint Joseph during 2019, 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 5:51 AM and sets 14 hours, 59 minutes later, at 8:50 PM, while on December 22, the shortest day of the year, it rises at 7:37 AM and sets 9 hours, 21 minutes later, at 4:58 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in April
The chance that a given day will be muggy in Saint Joseph is essentially constant during April, remaining within 1% of 1% throughout.
For reference, on July 22, the muggiest day of the year, there are muggy conditions 67% of the time, while on January 1, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in April
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Saint Joseph is gradually decreasing during April, decreasing from 12.6 miles per hour to 11.7 miles per hour over the course of the month.
For reference, on April 1, the windiest day of the year, the daily average wind speed is 12.6 miles per hour, while on August 7, the calmest day of the year, the daily average wind speed is 8.0 miles per hour.
The highest daily average wind speed during April is 12.6 miles per hour on April 1.
Average Wind Speed in April
Wind Direction in April
The growing season in Saint Joseph typically lasts for 6.0 months (182 days), from around April 15 to around October 14, rarely starting before March 28 or after May 3, and rarely ending before September 25 or after November 3.
During April in Saint Joseph, the chance that a given day is within the growing season is very rapidly increasing rising from 16% to 86% 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 Saint Joseph are increasing during April, increasing by 213°F, from 117°F to 331°F, over the course of the month.
Growing Degree Days in April
The average daily incident shortwave solar energy in Saint Joseph is gradually increasing during April, rising by 1.0 kWh, from 5.1 kWh to 6.0 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 Saint Joseph are 39.769 deg latitude, -94.847 deg longitude, and 915 ft elevation.
The topography within 2 miles of Saint Joseph contains only modest variations in elevation, with a maximum elevation change of 276 feet and an average elevation above sea level of 898 feet. Within 10 miles also contains only modest variations in elevation (400 feet). Within 50 miles contains only modest variations in elevation (636 feet).
The area within 2 miles of Saint Joseph is covered by artificial surfaces (83%) and trees (12%), within 10 miles by cropland (74%) and trees (14%), and within 50 miles by cropland (82%).
This report illustrates the typical weather in Saint Joseph 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 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Saint Joseph.
For each station, the records are corrected for the elevation difference between that station and Saint Joseph 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 Joseph is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Saint Joseph and a given station.
The stations contributing to this reconstruction are: Rosecrans Memorial Airport (94%, 7 kilometers, west); Kansas City International Airport (4.7%, 53 kilometers, south); and Lamoni Municipal Airport (1.3%, 125 kilometers, northeast).
Time zones for aiports and weather stations are provided by AskGeo.com .