Average Weather in April in Twain Harte California, United States
Daily high temperatures increase by 7°F, from 59°F to 65°F, rarely falling below 47°F or exceeding 77°F.
Daily low temperatures increase by 5°F, from 38°F to 43°F, rarely falling below 30°F or exceeding 50°F.
For reference, on July 28, the hottest day of the year, temperatures in Twain Harte typically range from 56°F to 85°F, while on December 23, the coldest day of the year, they range from 31°F to 48°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 Twain Harte experiences decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 48% to 40%.
The clearest day of the month is April 28, with clear, mostly clear, or partly cloudy conditions 60% of the time.
For reference, on February 21, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 56%, while on August 8, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 90%.
Cloud Cover Categories in April
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Twain Harte, the chance of a wet day over the course of April is rapidly decreasing, starting the month at 21% and ending it at 14%.
For reference, the year's highest daily chance of a wet day is 32% on February 21, and its lowest chance is 0% on August 6.
Over the course of April in Twain Harte, the chance of a day with only rain decreases from 18% to 14%, the chance of a day with mixed snow and rain decreases from 3% to 0%, 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 Twain Harte is rapidly decreasing, starting the month at 2.4 inches, when it rarely exceeds 5.6 inches or falls below 0.3 inches, and ending the month at 1.2 inches, when it rarely exceeds 2.9 inches or falls below 0.1 inches.
Average Monthly Rainfall in April
Over the course of April in Twain Harte, 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, 19 seconds, and weekly increase of 16 minutes, 11 seconds.
The shortest day of the month is April 1, with 12 hours, 38 minutes of daylight and the longest day is April 30, with 13 hours, 45 minutes of daylight.
Hours of Daylight and Twilight in April
The latest sunrise of the month in Twain Harte is 6:45 AM on April 1 and the earliest sunrise is 40 minutes earlier at 6:05 AM on April 30.
The earliest sunset is 7:24 PM on April 1 and the latest sunset is 27 minutes later at 7:51 PM on April 30.
Daylight saving time is observed in Twain Harte during 2018, 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 5:38 AM and sets 14 hours, 49 minutes later, at 8:27 PM, while on December 21, the shortest day of the year, it rises at 7:13 AM and sets 9 hours, 31 minutes later, at 4:44 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in April
The chance that a given day will be muggy in Twain Harte is essentially constant during April, remaining around 0% throughout.
Humidity Comfort Levels in April
The average hourly wind speed in Twain Harte is essentially constant during April, remaining around 5.2 miles per hour throughout.
For reference, on February 4, the windiest day of the year, the daily average wind speed is 5.6 miles per hour, while on September 24, the calmest day of the year, the daily average wind speed is 5.0 miles per hour.
Average Wind Speed in April
Wind Direction in April
The growing season in Twain Harte typically lasts for 6.4 months (195 days), from around April 20 to around November 1, rarely starting before March 26 or after May 13, and rarely ending before October 9 or after November 24.
During April in Twain Harte, the chance that a given day is within the growing season is very rapidly increasing rising from 14% to 71% 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 Twain Harte are gradually increasing during April, increasing by 126°F, from 96°F to 222°F, over the course of the month.
Growing Degree Days in April
The average daily incident shortwave solar energy in Twain Harte is increasing during April, rising by 1.3 kWh, from 5.8 kWh to 7.0 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 Twain Harte are 38.040 deg latitude, -120.233 deg longitude, and 3,727 ft elevation.
The topography within 2 miles of Twain Harte contains very significant variations in elevation, with a maximum elevation change of 1,785 feet and an average elevation above sea level of 3,811 feet. Within 10 miles contains very significant variations in elevation (5,118 feet). Within 50 miles also contains extreme variations in elevation (12,208 feet).
The area within 2 miles of Twain Harte is covered by trees (51%) and shrubs (49%), within 10 miles by trees (48%) and shrubs (47%), and within 50 miles by shrubs (31%) and trees (31%).
This report illustrates the typical weather in Twain Harte 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 5 weather stations near enough to contribute to our estimation of the temperature and dew point in Twain Harte.
For each station, the records are corrected for the elevation difference between that station and Twain Harte 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 Twain Harte is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Twain Harte and a given station.
The stations contributing to this reconstruction are: Bridgeport Sonora Junction (21%, 72 kilometers, northeast); Modesto City-County Airport (16%, 78 kilometers, southwest); Castle Airport (17%, 79 kilometers, south); Placerville Airport (28%, 88 kilometers, northwest); and Lake Tahoe Airport (18%, 98 kilometers, north).
Time zones for aiports and weather stations are provided by AskGeo.com .