The average hourly wind speed at San Francisco International Airport experiences mild seasonal variation over the course of the year. See selection chart to the right for input factor, Yale Study: Humidity Inside House Critical To Curbing Airborne Transmission Of COVID-19, Learn More About the Importance of Indoor Air Quality, General Filters, Inc. Warranty Coverage Chart. We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader. The climate profile is taken from closest available data source to San Francisco Bay.

The warm season lasts for 4.3 months, from June 10 to October 21, with an average daily high temperature above 69°F. the average number of hours the sun is actually out and shining. Ever wonder why there is morning dew, and why it is nearly always in the morning? Temperature variation graph for the last seven days, Weather Station: San Francisco, San Francisco International Airport (latitude 37-37-11N, longitude 122-21-53W). The cool season lasts for 2.2 months, from December 1 to February 8, with an average daily high temperature below 59°F. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. ... At a glance, it shows when it will be cloudy or clear for the next few days. No matter where you stay, even the hottest and the least humid place on earth, you still can generate water from air. It also shows the maximum and minimum recorded temperatures. Relative humidity is probalby the second most popular factor that people take into consideration when looking for the weather of a city to live in. These variables are found based on your location. What feels unbearably cold to one person for a swim might be fine for another. From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night. The time of year with cooler water lasts for 5.8 months, from December 18 to June 11, with an average temperature below 54°F. The average daily wind speed in October has been around 12 km/h, that’s the equivalent to about 7 mph, or 7 knots.

Mean Temp: 58 °F. It also shows the maximum recorded sustained wind speed for each month. The day of the year with the warmest water is September 15, with an average temperature of 58°F. Choose one of the three RH variables given and enter it into the calculator on the left. The calmest day of the year is October 4, with an average hourly wind speed of 7.5 miles per hour. The chart below plots the average number of days in any month that you can expect to see rain falling. The wetter season lasts 5.2 months, from November 3 to April 9, with a greater than 15% chance of a given day being a wet day. No, I’d like to continue to General Filters.

Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 29% on February 20. The chance of a wet day peaks at 29% on February 20. Outside RH (%): See selection chart to the right for your region.

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 time of year with warmer water lasts for 2.5 months, from August 2 to October 16, with an average temperature above 57°F. Inside ... Standard Factor to be used in residential humidity load calculation: Older Uninsulated Home: 0.75 to 1.00: Homes with single pane windows, little insulation, historic and farm homes: Newer Home Construction: 0.35 : Select only when air infiltration has been verified as 0.35 or less: Results. San Francisco International Airport has a weather station that reported reliably enough during the analysis period that we have included it in our network. San Francisco local time, GMT offset and weather information. The most rain falls during the 31 days centered around February 15, with an average total accumulation of 3.7 inches. What percent humidity do you wish to maintain? GeneralAire specializes in Whole-House Residential Humidifiers, Air Cleaners, Dehumidifiers, UV Air Purifiers, Heat and Energy Recovery Ventilators and Home Heating Fuel Oil Filters. * Data from weather station: Madrid, Spain. The earliest sunrise is at 5:47 AM on June 13, and the latest sunrise is 1 hour, 47 minutes later at 7:34 AM on October 31. The perceived humidity level at San Francisco International Airport, 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, remaining a virtually constant 0% throughout.

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. The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. Based on this score, the best time of year to visit San Francisco International Airport for hot-weather activities is from mid August to late September, with a peak score in the first week of September. This report illustrates the typical weather at San Francisco International Airport, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016. The average daily relative humidity for October is around 75%. The information presented below gives detailed historical monthly average weather conditions along with exceptional weather occurrences. Within 10 miles contains only modest variations in elevation (1,909 feet). We noticed you’re visiting us from Canada. Check out the humidity levels below. Heat Index. On August 7, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 92% of the time, and overcast or mostly cloudy 8% of the time. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages. For October expect the sun to shine for an average of 9 hours per day. All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . The Heat Index is a measure of how hot it feels when relative humidity is added to actual air temperature. The brighter period of the year lasts for 3.6 months, from May 6 to August 24, with an average daily incident shortwave energy per square meter above 7.1 kWh. The chance of wet days at San Francisco International Airport varies throughout the year.

Enter a value in each of the requested fields. The contents of this webpage are Copyright © 2020 General Filters, Inc. All Rights Reserved. High Temp: 73 °F. The wind is most often from the west for 9.0 months, from February 13 to November 12, with a peak percentage of 92% on August 12. The black line is the percentage chance that a given day is within the growing season.

The more hardy among us may enjoy a quick dip. The shaded overlays indicate night and civil twilight. During DST, the timezone abbreviation is PDT and the offset to Universal Time (UTC, GMT or Zulu) is -7:00 hours. It's a prediction of when San Francisco, CA, will have good weather for astronomical observing. Low Temp: 44 °F.

Over the course of the year, the temperature typically varies from 45°F to 72°F and is rarely below 38°F or above 83°F. 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. Know the percentage of humidity hour by hour in San Francisco and the humidity prediction for the next few days. Norman Y. Mineta San José International Airport, MERRA-2 Modern-Era Retrospective Analysis. The hottest day of the year is September 10, with an average high of 72°F and low of 57°F. The solar day over the course of the year 2020. Lower dew points feel drier and higher dew points feel more humid.

The wind is most often from the north for 3.0 months, from November 12 to February 13, with a peak percentage of 35% on January 1. Daylight saving time (DST) is observed at San Francisco International Airport during 2020, starting in the spring on March 8, lasting 7.8 months, and ending in the fall on November 1. At San Francisco International Airport, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year. Next 48 hrs San Francisco: Precipitation - mean wind force - Gusts - Relative humidity - Temperature This website uses cookies. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.



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