Average Weather in Oakland Maine, United States
In Oakland, the summers are warm, the winters are freezing and snowy, and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 11°F to 79°F and is rarely below -4°F or above 86°F.
Based on the tourism score, the best time of year to visit Oakland for warm-weather activities is from late June to early September.
The warm season lasts for 3.6 months, from May 29 to September 17, with an average daily high temperature above 68°F. The hottest day of the year is July 27, with an average high of 79°F and low of 60°F.
The cold season lasts for 3.3 months, from December 2 to March 11, with an average daily high temperature below 38°F. The coldest day of the year is January 29, with an average low of 11°F and high of 28°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
In Oakland, 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 Oakland begins around June 27 and lasts for 4.0 months, ending around October 27. On September 2, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 63% of the time, and overcast or mostly cloudy 37% of the time.
The cloudier part of the year begins around October 27 and lasts for 8.0 months, ending around June 27. On May 16, the cloudiest day of the year, the sky is overcast or mostly cloudy 58% of the time, and clear, mostly clear, or partly cloudy 42% 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 Oakland varies throughout the year.
The wetter season lasts 4.3 months, from April 13 to August 22, with a greater than 30% chance of a given day being a wet day. The chance of a wet day peaks at 38% on June 14.
The drier season lasts 7.7 months, from August 22 to April 13. The smallest chance of a wet day is 21% on January 29.
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 in Oakland changes throughout the year.
Rain alone is the most common for 9.6 months, from February 24 to December 12. The highest chance of a day with rain alone is 38% on June 14.
Snow alone is the most common for 2.4 months, from December 12 to February 24. The highest chance of a day with snow alone is 15% on December 30.
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. Oakland experiences significant seasonal variation in monthly rainfall.
Rain falls throughout the year in Oakland. The most rain falls during the 31 days centered around October 23, with an average total accumulation of 4.0 inches.
The least rain falls around January 24, with an average total accumulation of 1.0 inches.
Average Monthly Rainfall
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. Colder, drier snow tends to be on the higher end of that range and warmer, wetter snow on the lower end.
As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Oakland experiences significant seasonal variation in monthly liquid-equivalent snowfall.
The snowy period of the year lasts for 6.1 months, from October 25 to April 27, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around January 3, with an average total liquid-equivalent accumulation of 1.6 inches.
The snowless period of the year lasts for 5.9 months, from April 27 to October 25. The least snow falls around July 21, with an average total liquid-equivalent accumulation of 0.0 inches.
Average Liquid-Equivalent Monthly Snowfall
The length of the day in Oakland varies significantly over the course of the year. In 2018, the shortest day is December 21, with 8 hours, 49 minutes of daylight; the longest day is June 21, with 15 hours, 33 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 4:53 AM on June 15, and the latest sunrise is 2 hours, 26 minutes later at 7:19 AM on November 3. The earliest sunset is at 3:58 PM on December 9, and the latest sunset is 4 hours, 29 minutes later at 8:27 PM on June 26.
Daylight saving time (DST) is observed in Oakland during 2018, starting in the spring on March 11, lasting 7.8 months, and ending in the fall on November 4.
Sunrise & Sunset with Twilight and Daylight Saving Time
Oakland experiences some seasonal variation in the perceived humidity.
The muggier period of the year lasts for 3.0 months, from June 14 to September 14, during which time the comfort level is muggy, oppressive, or miserable at least 5% of the time. The muggiest day of the year is July 30, with muggy conditions 18% of the time.
The least muggy day of the year is March 2, when muggy conditions are essentially unheard of.
Humidity Comfort Levels
The average hourly wind speed in Oakland experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 4.8 months, from December 4 to April 30, with average wind speeds of more than 5.2 miles per hour. The windiest day of the year is March 8, with an average hourly wind speed of 6.6 miles per hour.
The calmer time of year lasts for 7.2 months, from April 30 to December 4. The calmest day of the year is August 1, with an average hourly wind speed of 3.7 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Oakland varies throughout the year.
The wind is most often from the north for 2.4 months, from February 28 to May 9, with a peak percentage of 37% on March 9. The wind is most often from the south for 1.8 months, from May 9 to July 2, with a peak percentage of 38% on June 30. The wind is most often from the west for 7.9 months, from July 2 to February 28, with a peak percentage of 45% on January 1.
Best Time of Year to Visit
To characterize how pleasant the weather is in Oakland 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 Oakland for general outdoor tourist activities is from late June to early September, with a peak score in the second week of August.
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 Oakland 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 Oakland typically lasts for 5.5 months (166 days), from around April 28 to around October 11, rarely starting before April 13 or after May 13, and rarely ending before September 25 or after October 29.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms in Oakland should appear around May 7, only rarely appearing before April 27 or after May 18.
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 3.5 months, from May 7 to August 24, with an average daily incident shortwave energy per square meter above 5.6 kWh. The brightest day of the year is July 2, with an average of 6.7 kWh.
The darker period of the year lasts for 3.3 months, from October 30 to February 9, with an average daily incident shortwave energy per square meter below 2.5 kWh. The darkest day of the year is December 17, with an average of 1.4 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Oakland are 44.540 deg latitude, -69.722 deg longitude, and 299 ft elevation.
The topography within 2 miles of Oakland contains only modest variations in elevation, with a maximum elevation change of 390 feet and an average elevation above sea level of 337 feet. Within 10 miles contains only modest variations in elevation (722 feet). Within 50 miles contains significant variations in elevation (4,219 feet).
The area within 2 miles of Oakland is covered by trees (76%), within 10 miles by trees (74%) and water (14%), and within 50 miles by trees (83%).
This report illustrates the typical weather in Oakland, 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 Oakland.
For each station, the records are corrected for the elevation difference between that station and Oakland 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 Oakland is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Oakland and a given station.
The stations contributing to this reconstruction are: Waterville Robert Lafleur Airport (92%, 4.4 kilometers, east); Augusta State Airport (7%, 26 kilometers, south); Greenville (0.8%, 103 kilometers, north); and Berlin Municipal Airport (0.7%, 116 kilometers, west).
Time zones for aiports and weather stations are provided by AskGeo.com .