Climate and Average Weather Year Round at Selfridge Air National Guard Base United States

At Selfridge Air National Guard Base, the summers are warm; the winters are freezing, snowy, and windy; and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 18°F to 82°F and is rarely below 3°F or above 91°F.

Based on the tourism score, the best time of year to visit Selfridge Air National Guard Base for warm-weather activities is from mid June to mid September.

The warm season lasts for 3.7 months, from May 27 to September 16, with an average daily high temperature above 72°F. The hottest month of the year at Selfridge Air National Guard Base is July, with an average high of 82°F and low of 63°F.

The cold season lasts for 3.4 months, from November 30 to March 10, with an average daily high temperature below 41°F. The coldest month of the year at Selfridge Air National Guard Base is January, with an average low of 20°F and high of 32°F.

At Selfridge Air National Guard Base, 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 Selfridge Air National Guard Base begins around May 30 and lasts for 5.1 months, ending around November 1.

The clearest month of the year at Selfridge Air National Guard Base is August, during which on average the sky is clear, mostly clear, or partly cloudy 67% of the time.

The cloudier part of the year begins around November 1 and lasts for 6.9 months, ending around May 30.

The cloudiest month of the year at Selfridge Air National Guard Base is January, during which on average the sky is overcast or mostly cloudy 63% of the time.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days at Selfridge Air National Guard Base varies throughout the year.

The wetter season lasts 6.4 months, from March 29 to October 10, with a greater than 25% chance of a given day being a wet day. The month with the most wet days at Selfridge Air National Guard Base is June, with an average of 10.2 days with at least 0.04 inches of precipitation.

The drier season lasts 5.6 months, from October 10 to March 29. The month with the fewest wet days at Selfridge Air National Guard Base is February, with an average of 5.0 days with at least 0.04 inches of precipitation.

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 Selfridge Air National Guard Base changes throughout the year.

Rain alone is the most common for 11 months, from February 14 to January 19. The month with the most days of rain alone at Selfridge Air National Guard Base is June, with an average of 10.2 days.

Snow alone is the most common for 3.7 weeks, from January 19 to February 14. The month with the most days of snow alone at Selfridge Air National Guard Base is January, with an average of 2.1 days.

Rainfall

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. Selfridge Air National Guard Base experiences significant seasonal variation in monthly rainfall.

Rain falls throughout the year at Selfridge Air National Guard Base. The month with the most rain at Selfridge Air National Guard Base is September, with an average rainfall of 2.6 inches.

The month with the least rain at Selfridge Air National Guard Base is January, with an average rainfall of 0.7 inches.

Snowfall

As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Selfridge Air National Guard Base experiences significant seasonal variation in monthly snowfall.

The snowy period of the year lasts for 4.5 months, from November 22 to April 7, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow at Selfridge Air National Guard Base is February, with an average snowfall of 4.8 inches.

The snowless period of the year lasts for 7.5 months, from April 7 to November 22. The least snow falls around July 19, with an average total accumulation of 0.0 inches.

The length of the day at Selfridge Air National Guard Base varies significantly over the course of the year. In 2024, the shortest day is December 21, with 9 hours, 3 minutes of daylight; the longest day is June 20, with 15 hours, 19 minutes of daylight.

The earliest sunrise is at 5:53 AM on June 14, and the latest sunrise is 2 hours, 14 minutes later at 8:07 AM on November 2. The earliest sunset is at 4:57 PM on December 8, and the latest sunset is 4 hours, 15 minutes later at 9:13 PM on June 26.

Daylight saving time (DST) is observed at Selfridge Air National Guard Base during 2024, starting in the spring on March 10, lasting 7.8 months, and ending in the fall on November 3.

The figure below presents a compact representation of key lunar data for 2024. 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. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases.

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

Selfridge Air National Guard Base experiences significant seasonal variation in the perceived humidity.

The muggier period of the year lasts for 3.8 months, from May 29 to September 22, during which time the comfort level is muggy, oppressive, or miserable at least 9% of the time. The month with the most muggy days at Selfridge Air National Guard Base is July, with 10.2 days that are muggy or worse.

The least muggy day of the year is February 12, when muggy conditions are essentially unheard of.

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. 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.

The average hourly wind speed at Selfridge Air National Guard Base experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 7.1 months, from October 5 to May 8, with average wind speeds of more than 10.8 miles per hour. The windiest month of the year at Selfridge Air National Guard Base is January, with an average hourly wind speed of 13.4 miles per hour.

The calmer time of year lasts for 4.9 months, from May 8 to October 5. The calmest month of the year at Selfridge Air National Guard Base is August, with an average hourly wind speed of 8.3 miles per hour.

The predominant average hourly wind direction at Selfridge Air National Guard Base varies throughout the year.

The wind is most often from the north for 4.0 days, from March 26 to March 30 and for 4.1 weeks, from April 12 to May 11, with a peak percentage of 29% on March 29. The wind is most often from the west for 1.9 weeks, from March 30 to April 12; for 3.2 months, from May 11 to August 16; and for 6.2 months, from September 21 to March 26, with a peak percentage of 38% on July 19. The wind is most often from the south for 1.2 months, from August 16 to September 21, with a peak percentage of 32% on September 13.

Selfridge Air National Guard Base 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 extreme seasonal variation over the course of the year.

The time of year with warmer water lasts for 3.0 months, from June 22 to September 23, with an average temperature above 65°F. The month of the year at Selfridge Air National Guard Base with the warmest water is August, with an average temperature of 73°F.

The time of year with cooler water lasts for 4.2 months, from December 10 to April 17, with an average temperature below 41°F. The month of the year at Selfridge Air National Guard Base with the coolest water is February, with an average temperature of 33°F.

To characterize how pleasant the weather is at Selfridge Air National Guard Base 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 Selfridge Air National Guard Base for general outdoor tourist activities is from mid June to mid September, with a peak score in the third 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 Selfridge Air National Guard Base for hot-weather activities is from early July to mid August, with a peak score in the third week of July.

Methodology

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.

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

The growing season at Selfridge Air National Guard Base typically lasts for 5.9 months (179 days), from around April 26 to around October 21, rarely starting before April 8 or after May 14, and rarely ending before October 2 or after November 9.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

Based on growing degree days alone, the first spring blooms at Selfridge Air National Guard Base should appear around April 22, only rarely appearing before April 8 or after May 6.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

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 3.6 months, from May 1 to August 20, with an average daily incident shortwave energy per square meter above 5.9 kWh. The brightest month of the year at Selfridge Air National Guard Base is June, with an average of 6.8 kWh.

The darker period of the year lasts for 3.4 months, from November 1 to February 13, with an average daily incident shortwave energy per square meter below 2.5 kWh. The darkest month of the year at Selfridge Air National Guard Base is December, with an average of 1.5 kWh.

For the purposes of this report, the geographical coordinates of Selfridge Air National Guard Base are 42.608 deg latitude, -82.836 deg longitude, and 577 ft elevation.

The topography within 2 miles of Selfridge Air National Guard Base is essentially flat, with a maximum elevation change of 43 feet and an average elevation above sea level of 578 feet. Within 10 miles is also essentially flat (89 feet). Within 50 miles is essentially flat (797 feet).

The area within 2 miles of Selfridge Air National Guard Base is covered by artificial surfaces (73%) and water (15%), within 10 miles by artificial surfaces (47%) and water (39%), and within 50 miles by cropland (38%) and artificial surfaces (21%).