Average Weather in March in Spiro Oklahoma, United States
Daily high temperatures increase by 8°F, from 61°F to 70°F, rarely falling below 46°F or exceeding 81°F.
Daily low temperatures increase by 8°F, from 39°F to 48°F, rarely falling below 27°F or exceeding 61°F.
For reference, on July 25, the hottest day of the year, temperatures in Spiro typically range from 72°F to 94°F, while on January 7, the coldest day of the year, they range from 31°F to 50°F.
Average High and Low Temperature in March
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on March. 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 March
The month of March in Spiro experiences gradually decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 48% to 42%.
The clearest day of the month is March 31, with clear, mostly clear, or partly cloudy conditions 58% of the time.
For reference, on February 17, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 48%, while on October 5, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 72%.
Cloud Cover Categories in March
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Spiro, the chance of a wet day over the course of March is increasing, starting the month at 24% and ending it at 29%.
For reference, the year's highest daily chance of a wet day is 44% on May 21, and its lowest chance is 18% on January 12.
Over the course of March in Spiro, the chance of a day with only rain increases from 22% to 29%, 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 1% throughout.
Probability of Precipitation in March
The average sliding 31-day rainfall during March in Spiro is increasing, starting the month at 3.0 inches, when it rarely exceeds 5.8 inches or falls below 0.9 inches, and ending the month at 3.8 inches, when it rarely exceeds 6.2 inches or falls below 1.7 inches.
Average Monthly Rainfall in March
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 March in Spiro is essentially constant, remaining about 0.1 inches throughout, and rarely exceeding 0.4 inches or falling to 0.0 inches.
Average Monthly Liquid-Equivalent Snowfall in March
Over the course of March in Spiro, 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, 7 minutes, implying an average daily increase of 2 minutes, 13 seconds, and weekly increase of 15 minutes, 34 seconds.
The shortest day of the month is March 1, with 11 hours, 26 minutes of daylight and the longest day is March 31, with 12 hours, 33 minutes of daylight.
Hours of Daylight and Twilight in March
The earliest sunrise of the month in Spiro is 6:36 AM on March 10 and the latest sunrise is 59 minutes later at 7:34 AM on March 11.
The earliest sunset is 6:14 PM on March 1 and the latest sunset is 1 hour, 25 minutes later at 7:39 PM on March 31.
Daylight saving time (DST) starts at 3:00 AM on March 11, 2018, shifting sunrise and sunset to be an hour later.
For reference, on June 21, the longest day of the year, the Sun rises at 6:04 AM and sets 14 hours, 32 minutes later, at 8:36 PM, while on December 21, the shortest day of the year, it rises at 7:23 AM and sets 9 hours, 47 minutes later, at 5:10 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in March
The chance that a given day will be muggy in Spiro is essentially constant during March, remaining around 1% throughout.
For reference, on July 22, the muggiest day of the year, there are muggy conditions 87% of the time, while on January 12, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in March
The average hourly wind speed in Spiro is essentially constant during March, remaining within 0.1 miles per hour of 7.4 miles per hour throughout.
For reference, on March 23, the windiest day of the year, the daily average wind speed is 7.5 miles per hour, while on August 3, the calmest day of the year, the daily average wind speed is 4.6 miles per hour.
The highest daily average wind speed during March is 7.5 miles per hour on March 23.
Average Wind Speed in March
Wind Direction in March
The growing season in Spiro typically lasts for 7.5 months (229 days), from around March 24 to around November 8, rarely starting before March 1 or after April 16, and rarely ending before October 19 or after November 29.
During March in Spiro, the chance that a given day is within the growing season is very rapidly increasing rising from 10% to 64% over the course of the month.
Time Spent in Various Temperature Bands and the Growing Season in March
The average accumulated growing degree days in Spiro are increasing during March, increasing by 199°F, from 130°F to 329°F, over the course of the month.
Growing Degree Days in March
The average daily incident shortwave solar energy in Spiro is increasing during March, rising by 1.2 kWh, from 4.2 kWh to 5.4 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in March
For the purposes of this report, the geographical coordinates of Spiro are 35.241 deg latitude, -94.620 deg longitude, and 459 ft elevation.
The topography within 2 miles of Spiro contains only modest variations in elevation, with a maximum elevation change of 200 feet and an average elevation above sea level of 479 feet. Within 10 miles contains only modest variations in elevation (558 feet). Within 50 miles contains significant variations in elevation (2,349 feet).
The area within 2 miles of Spiro is covered by cropland (81%) and artificial surfaces (10%), within 10 miles by cropland (84%) and trees (11%), and within 50 miles by trees (58%) and cropland (36%).
This report illustrates the typical weather in Spiro 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 Spiro.
For each station, the records are corrected for the elevation difference between that station and Spiro 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 Spiro is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Spiro and a given station.
The stations contributing to this reconstruction are: Robert S Kerr Airport (36%, 25 kilometers, south); Fort Smith Municipal Airport (34%, 25 kilometers, northeast); and Sallisaw Municipal Airport (30%, 27 kilometers, northwest).
Time zones for aiports and weather stations are provided by AskGeo.com .