Average Weather at Alpena County Regional Airport Michigan, United States
At Alpena County Regional Airport, the summers are warm and partly cloudy and the winters are freezing, dry, windy, and mostly cloudy. Over the course of the year, the temperature typically varies from 12°F to 79°F and is rarely below -4°F or above 88°F.
Based on the tourism score, the best time of year to visit Alpena County Regional Airport for warm-weather activities is from late June to early September.
The warm season lasts for 3.6 months, from May 29 to September 16, with an average daily high temperature above 69°F. The hottest day of the year is July 19, with an average high of 79°F and low of 58°F.
The cold season lasts for 3.4 months, from December 1 to March 14, with an average daily high temperature below 37°F. The coldest day of the year is January 29, with an average low of 12°F and high of 27°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
At Alpena County Regional Airport, 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 at Alpena County Regional Airport begins around May 16 and lasts for 5.6 months, ending around November 5. On August 7, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 68% of the time, and overcast or mostly cloudy 32% of the time.
The cloudier part of the year begins around November 5 and lasts for 6.4 months, ending around May 16. On January 12, the cloudiest day of the year, the sky is overcast or mostly cloudy 73% of the time, and clear, mostly clear, or partly cloudy 27% 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 at Alpena County Regional Airport varies throughout the year.
The wetter season lasts 7.6 months, from March 30 to November 18, with a greater than 22% chance of a given day being a wet day. The chance of a wet day peaks at 31% on September 22.
The drier season lasts 4.4 months, from November 18 to March 30. The smallest chance of a wet day is 12% on February 2.
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 at Alpena County Regional Airport changes throughout the year.
Rain alone is the most common for 9.3 months, from March 12 to December 19. The highest chance of a day with rain alone is 31% on June 23.
Snow alone is the most common for 2.7 months, from December 19 to March 12. The highest chance of a day with snow alone is 10% on January 3.
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. Alpena County Regional Airport experiences significant seasonal variation in monthly rainfall.
The rainy period of the year lasts for 10 months, from February 24 to January 8, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around September 14, with an average total accumulation of 2.6 inches.
The rainless period of the year lasts for 1.6 months, from January 8 to February 24. The least rain falls around February 5, with an average total accumulation of 0.3 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. Alpena County Regional Airport experiences some seasonal variation in monthly liquid-equivalent snowfall.
The snowy period of the year lasts for 5.5 months, from November 8 to April 22, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around February 27, with an average total liquid-equivalent accumulation of 0.5 inches.
The snowless period of the year lasts for 6.5 months, from April 22 to November 8. The least snow falls around July 16, with an average total liquid-equivalent accumulation of 0.0 inches.
Average Liquid-Equivalent Monthly Snowfall
The length of the day at Alpena County Regional Airport varies significantly over the course of the year. In 2018, the shortest day is December 21, with 8 hours, 45 minutes of daylight; the longest day is June 21, with 15 hours, 38 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:46 AM on June 15, and the latest sunrise is 2 hours, 29 minutes later at 8:15 AM on November 3. The earliest sunset is at 4:52 PM on December 10, and the latest sunset is 4 hours, 33 minutes later at 9:25 PM on June 26.
Daylight saving time (DST) is observed at Alpena County Regional Airport 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
Alpena County Regional Airport experiences some seasonal variation in the perceived humidity.
The muggier period of the year lasts for 3.2 months, from June 10 to September 17, 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 December 3, when muggy conditions are essentially unheard of.
Humidity Comfort Levels
The average hourly wind speed at Alpena County Regional Airport experiences significant seasonal variation over the course of the year.
The windier part of the year lasts for 6.4 months, from October 6 to April 19, with average wind speeds of more than 10.2 miles per hour. The windiest day of the year is January 12, with an average hourly wind speed of 13.0 miles per hour.
The calmer time of year lasts for 5.6 months, from April 19 to October 6. The calmest day of the year is July 21, with an average hourly wind speed of 7.4 miles per hour.
Average Wind Speed
The predominant average hourly wind direction at Alpena County Regional Airport varies throughout the year.
The wind is most often from the north for 1.9 months, from March 5 to May 3, with a peak percentage of 33% on March 10. The wind is most often from the west for 10 months, from May 3 to March 5, with a peak percentage of 44% on January 1.
Alpena County Regional Airport is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.
The average water temperature experiences significant seasonal variation over the course of the year.
The time of year with warmer water lasts for 2.3 months, from July 13 to September 22, with an average temperature above 60°F. The day of the year with the warmest water is August 13, with an average temperature of 66°F.
The time of year with cooler water lasts for 5.2 months, from December 16 to May 22, with an average temperature below 40°F. The day of the year with the coolest water is March 8, with an average temperature of 34°F.
Average Water Temperature
Best Time of Year to Visit
To characterize how pleasant the weather is at Alpena County Regional Airport 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 Alpena County Regional Airport for general outdoor tourist activities is from late June to early September, with a peak score in the first 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 Alpena County Regional Airport 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 at Alpena County Regional Airport typically lasts for 4.6 months (139 days), from around May 15 to around October 1, rarely starting before April 27 or after June 4, and rarely ending before September 14 or after October 18.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms at Alpena County Regional Airport should appear around May 6, only rarely appearing before April 23 or after May 19.
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 6 to August 20, with an average daily incident shortwave energy per square meter above 5.8 kWh. The brightest day of the year is July 1, with an average of 7.0 kWh.
The darker period of the year lasts for 3.6 months, from October 30 to February 15, with an average daily incident shortwave energy per square meter below 2.3 kWh. The darkest day of the year is December 23, with an average of 1.1 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Alpena County Regional Airport are 45.078 deg latitude, -83.560 deg longitude, and 676 ft elevation.
The topography within 2 miles of Alpena County Regional Airport is essentially flat, with a maximum elevation change of 36 feet and an average elevation above sea level of 676 feet. Within 10 miles is essentially flat (407 feet). Within 50 miles contains only modest variations in elevation (945 feet).
The area within 2 miles of Alpena County Regional Airport is covered by herbaceous vegetation (68%) and artificial surfaces (13%), within 10 miles by herbaceous vegetation (42%) and cropland (23%), and within 50 miles by water (50%) and trees (32%).
This report illustrates the typical weather at Alpena County Regional Airport, 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
Alpena County Regional Airport has a weather station that reported reliably enough during the analysis period that we have included it in our network. When available, historical temperature and dew point measurements are taken directly from this weather station. These records are obtained from NOAA's Integrated Surface Hourly data set, falling back on ICAO METAR records as required.
In the case of missing or erroneous measurements from this station, we fall back on records from nearby stations, adjusted according to typical seasonal and diurnal intra-station differences. For a given day of the year and hour of the day, the fallback station is selected to minimize the prediction error over the years for which there are measurements for both stations.
The stations on which we may fall back include but are not limited to Presque Isle County Airport; Oscoda-Wurtsmith Airport; Great Duck Island; Drummond Island Airport; Cheboygan, Cheboygan County Airport; Gaylord Regional Airport; Grayling, Grayling Army Airfield; and Port Hope.
Time zones for aiports and weather stations are provided by AskGeo.com .