Average Weather in May in Parma Idaho, United States
Daily low temperatures increase by 8°F, from 43°F to 51°F, rarely falling below 34°F or exceeding 59°F.
For reference, on July 27, the hottest day of the year, temperatures in Parma typically range from 61°F to 93°F, while on January 1, the coldest day of the year, they range from 23°F to 35°F.
Average High and Low Temperature in May
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on May. 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 May
Gorobinci, Macedonia (5,998 miles away); Ankara, Turkey (6,362 miles); and Pasragad Branch, Iran (6,939 miles) are the far-away foreign places with temperatures most similar to Parma (view comparison).
The month of May in Parma experiences gradually decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 48% to 43%.
The clearest day of the month is May 31, with clear, mostly clear, or partly cloudy conditions 57% of the time.
For reference, on January 11, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 60%, while on July 28, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 84%.
Cloud Cover Categories in May
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Parma, the chance of a wet day over the course of May is essentially constant, remaining around 17% throughout.
For reference, the year's highest daily chance of a wet day is 23% on December 1, and its lowest chance is 3% on July 28.
Probability of Precipitation in May
The average sliding 31-day rainfall during May in Parma is essentially constant, remaining about 0.8 inches throughout, and rarely exceeding 1.8 inches or falling below 0.2 inches.
The highest average 31-day accumulation is 0.9 inches on May 17.
Average Monthly Rainfall in May
Over the course of May in Parma, 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, 2 minutes, implying an average daily increase of 2 minutes, 4 seconds, and weekly increase of 14 minutes, 29 seconds.
The shortest day of the month is May 1, with 14 hours, 11 minutes of daylight and the longest day is May 31, with 15 hours, 13 minutes of daylight.
Hours of Daylight and Twilight in May
The latest sunrise of the month in Parma is 6:39 AM on May 1 and the earliest sunrise is 31 minutes earlier at 6:09 AM on May 31.
The earliest sunset is 8:50 PM on May 1 and the latest sunset is 32 minutes later at 9:22 PM on May 31.
Daylight saving time is observed in Parma during 2018, but it neither starts nor ends during May, so the entire month is in daylight saving time.
For reference, on June 21, the longest day of the year, the Sun rises at 6:05 AM and sets 15 hours, 28 minutes later, at 9:33 PM, while on December 21, the shortest day of the year, it rises at 8:18 AM and sets 8 hours, 55 minutes later, at 5:13 PM.
Sunrise & Sunset with Twilight in May
The chance that a given day will be muggy in Parma is essentially constant during May, remaining around 0% throughout.
For reference, on August 5, the muggiest day of the year, there are muggy conditions 0% 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 May
The average hourly wind speed in Parma is essentially constant during May, remaining within 0.2 miles per hour of 7.1 miles per hour throughout.
For reference, on April 11, the windiest day of the year, the daily average wind speed is 7.4 miles per hour, while on September 15, the calmest day of the year, the daily average wind speed is 5.7 miles per hour.
Average Wind Speed in May
Wind Direction in May
The growing season in Parma typically lasts for 5.6 months (172 days), from around April 25 to around October 14, rarely starting before April 4 or after May 15, and rarely ending before September 24 or after November 7.
The month of May in Parma is more likely than not fully within the growing season, with the chance that a given day is in the growing season rapidly increasing from 65% to 99% over the course of the month.
Time Spent in Various Temperature Bands and the Growing Season in May
The average accumulated growing degree days in Parma are increasing during May, increasing by 314°F, from 223°F to 537°F, over the course of the month.
Growing Degree Days in May
The average daily incident shortwave solar energy in Parma is gradually increasing during May, rising by 0.8 kWh, from 6.4 kWh to 7.3 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in May
For the purposes of this report, the geographical coordinates of Parma are 43.785 deg latitude, -116.943 deg longitude, and 2,257 ft elevation.
The topography within 2 miles of Parma contains only modest variations in elevation, with a maximum elevation change of 157 feet and an average elevation above sea level of 2,256 feet. Within 10 miles contains only modest variations in elevation (807 feet). Within 50 miles contains significant variations in elevation (5,466 feet).
The area within 2 miles of Parma is covered by cropland (89%), within 10 miles by cropland (77%) and grassland (17%), and within 50 miles by shrubs (55%) and grassland (22%).
This report illustrates the typical weather in Parma 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 Parma.
For each station, the records are corrected for the elevation difference between that station and Parma 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 Parma is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Parma and a given station.
The stations contributing to this reconstruction are: Ontario Municipal Airport (50%, 27 kilometers, north); Caldwell Industrial Airport (43%, 29 kilometers, southeast); Rome State Airport (3.4%, 152 kilometers, southwest); and Burns Municipal Airport (3.1%, 163 kilometers, west).
Time zones for aiports and weather stations are provided by AskGeo.com .