Average Weather in Saint-Marcellin-en-Forez France
In Saint-Marcellin-en-Forez, the summers are short and warm, the winters are very cold, and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 31°F to 80°F and is rarely below 20°F or above 91°F.
Based on the tourism score, the best time of year to visit Saint-Marcellin-en-Forez for warm-weather activities is from mid June to early September.
The warm season lasts for 2.9 months, from June 12 to September 9, with an average daily high temperature above 73°F. The hottest day of the year is August 4, with an average high of 80°F and low of 57°F.
The cold season lasts for 3.7 months, from November 16 to March 6, with an average daily high temperature below 51°F. The coldest day of the year is February 7, with an average low of 31°F and high of 45°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
Venersborg, Washington, United States (5,348 miles away) and Frazier Park, California, United States (5,857 miles) are the far-away foreign places with temperatures most similar to Saint-Marcellin-en-Forez (view comparison).
In Saint-Marcellin-en-Forez, 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 in Saint-Marcellin-en-Forez begins around June 9 and lasts for 3.5 months, ending around September 24. On July 21, 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 September 24 and lasts for 8.5 months, ending around June 9. On November 23, the cloudiest day of the year, the sky is overcast or mostly cloudy 65% of the time, and clear, mostly clear, or partly cloudy 35% 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 in Saint-Marcellin-en-Forez varies throughout the year.
The wetter season lasts 6.8 months, from April 9 to November 2, with a greater than 24% chance of a given day being a wet day. The chance of a wet day peaks at 32% on May 25.
The drier season lasts 5.2 months, from November 2 to April 9. The smallest chance of a wet day is 16% on March 5.
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 throughout the year is rain alone, with a peak probability of 32% on May 25.
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. Saint-Marcellin-en-Forez experiences some seasonal variation in monthly rainfall.
Rain falls throughout the year in Saint-Marcellin-en-Forez. The most rain falls during the 31 days centered around September 30, with an average total accumulation of 2.6 inches.
The least rain falls around February 20, with an average total accumulation of 0.9 inches.
Average Monthly Rainfall
The length of the day in Saint-Marcellin-en-Forez varies significantly over the course of the year. In 2018, the shortest day is December 21, with 8 hours, 42 minutes of daylight; the longest day is June 21, with 15 hours, 41 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:53 AM on June 15, and the latest sunrise is 2 hours, 29 minutes later at 8:23 AM on January 2. The earliest sunset is at 4:59 PM on December 10, and the latest sunset is 4 hours, 36 minutes later at 9:36 PM on June 26.
Daylight saving time (DST) is observed in Saint-Marcellin-en-Forez during 2018, starting in the spring on March 25, lasting 7.1 months, and ending in the fall on October 28.
Sunrise & Sunset with Twilight and Daylight Saving Time
The perceived humidity level in Saint-Marcellin-en-Forez, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, staying within 1% of 1% throughout.
Humidity Comfort Levels
The average hourly wind speed in Saint-Marcellin-en-Forez experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 7.0 months, from October 14 to May 15, with average wind speeds of more than 7.5 miles per hour. The windiest day of the year is April 3, with an average hourly wind speed of 8.6 miles per hour.
The calmer time of year lasts for 5.0 months, from May 15 to October 14. The calmest day of the year is August 12, with an average hourly wind speed of 6.4 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Saint-Marcellin-en-Forez varies throughout the year.
The wind is most often from the north for 8.7 months, from January 13 to October 3 and for 1.0 weeks, from November 25 to December 2, with a peak percentage of 51% on July 27. The wind is most often from the south for 1.7 months, from October 3 to November 25 and for 1.4 months, from December 2 to January 13, with a peak percentage of 42% on October 28.
Best Time of Year to Visit
To characterize how pleasant the weather is in Saint-Marcellin-en-Forez 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 Saint-Marcellin-en-Forez for general outdoor tourist activities is from mid June to early September, with a peak score in the third 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 Saint-Marcellin-en-Forez for hot-weather activities is from early July to mid August, with a peak score in the last 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 in Saint-Marcellin-en-Forez typically lasts for 6.7 months (203 days), from around April 16 to around November 5, rarely starting before March 25 or after May 11, and rarely ending before October 16 or after November 30.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms in Saint-Marcellin-en-Forez should appear around April 4, only rarely appearing before March 17 or after April 23.
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 3.2 months, from May 14 to August 19, with an average daily incident shortwave energy per square meter above 6.0 kWh. The brightest day of the year is July 6, with an average of 7.2 kWh.
The darker period of the year lasts for 3.5 months, from October 28 to February 14, with an average daily incident shortwave energy per square meter below 2.5 kWh. The darkest day of the year is December 27, with an average of 1.3 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Saint-Marcellin-en-Forez are 45.495 deg latitude, 4.169 deg longitude, and 1,411 ft elevation.
The topography within 2 miles of Saint-Marcellin-en-Forez contains significant variations in elevation, with a maximum elevation change of 659 feet and an average elevation above sea level of 1,421 feet. Within 10 miles contains significant variations in elevation (2,917 feet). Within 50 miles contains large variations in elevation (5,351 feet).
The area within 2 miles of Saint-Marcellin-en-Forez is covered by grassland (47%), cropland (30%), and trees (14%), within 10 miles by grassland (33%) and trees (28%), and within 50 miles by trees (36%) and grassland (28%).
This report illustrates the typical weather in Saint-Marcellin-en-Forez, 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 Saint-Marcellin-en-Forez.
For each station, the records are corrected for the elevation difference between that station and Saint-Marcellin-en-Forez 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-Marcellin-en-Forez is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Saint-Marcellin-en-Forez and a given station.
The stations contributing to this reconstruction are: Saint-Étienne–Bouthéon Airport (86%, 11 kilometers, northeast); Le Puy – Loudes Airport (6%, 56 kilometers, southwest); Clermont-Ferrand Auvergne Airport (4.3%, 84 kilometers, northwest); and Vichy - Charmeil Airport (3.5%, 96 kilometers, northwest).
Time zones for aiports and weather stations are provided by AskGeo.com .