Weather
Mackinac Island, Michigan
Current Conditions
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Almanac
Average High: 33°
Average Low: 21°
Record high/year: 50° (1976)
Record low/year: -2° (1989)
Sunrise: 7:39 AM
Sunset: 7:52 PM
Detailed History
Sun and Moon
Sunrise: 07:39 AM (EDT)
Moon Rise: 10:10 AM (EDT)
Sunset: 07:52 PM (EDT)
Moon Set: 01:34 AM (EDT)
Moon Phase
Nowcast as of 1:00 am EDT on March 21, 2010
Now
At 2 am...mostly clear. Temperature around 19. Light winds. At 4 am...mostly clear. Temperature around 19. Light winds. At 6 am...clear. Temperature around 19. Light winds.
Air Pollution
Air Pollution Forecast for Eastern U.P.
| Current | Air Quality: Good | Pollutant: PM2.5 |
| Sat | Air Quality: Good | Pollutant: PM2.5 |
| Sun | Air Quality: Good | Pollutant: PM2.5 |
| Mon | Air Quality: Good | Pollutant: PM2.5 |
Next 12 Hours
Forecast data from the National Digital Forecast Database
5-Day Forecast
Forecast for Mackinac
Rest of Tonight
Mostly clear. Lows around 17. Light winds.
Sunday
Sunny. Highs in the mid 40s. Southwest winds 5 to 15 mph.
Sunday Night
Mostly clear. Lows in the mid 20s. Light winds.
Monday
Mostly sunny. Highs in the upper 40s. East winds 5 to 10 mph.
Monday Night
Mostly clear. Lows in the mid 20s. East winds 5 to 10 mph.
Tuesday
Partly cloudy. Highs around 50.
Tuesday Night
Partly cloudy. Lows in the lower 30s.
Wednesday
Partly cloudy. Highs in the mid 40s.
Wednesday Night
Partly cloudy. Lows in the mid 20s.
Thursday
Partly cloudy. Highs in the lower 40s.
Thursday Night
Mostly clear. Lows in the lower 20s.
Friday
Partly cloudy. Highs in the upper 30s.
Friday Night
Partly cloudy. Lows around 20.
Saturday
Partly cloudy. Highs in the upper 30s.
Personal Weather Stations
Personal Weather Stations [Add your weather station!]
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Location: Mackinac Island, MI Updated: 1:20 AM EDT |
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| Temperature: 23.2 °F | Dew Point: 18 °F | Humidity: 81% | Wind: ENE at 2.0 mph | Pressure: 30.35 in | Hourly Precipitation: - | Windchill: 23 °F | Historical Graphs |
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Location: No. 8 Island, Cedarville, MI Updated: 1:25 AM EDT |
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| Temperature: 25.9 °F | Dew Point: 20 °F | Humidity: 77% | Wind: Calm | Pressure: 30.22 in | Hourly Precipitation: 0.00 in | Windchill: 26 °F | Historical Graphs |
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MSN Maps of: |
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| Temperature | Dew Point | Humidity | Wind | Pressure | Hourly Precipitation | - | |
NWS Forecaster Discussion
119 fxus63 kapx 210120 afdapx Area forecast discussion National Weather Service Gaylord Michigan 920 PM EDT Sat Mar 20 2010 Synopsis.../issued at 257 PM/ High pressure across the Great Lakes will provide tranquil conditions through the rest of the weekend and into early next week. This will produce dry and increasingly mild temperatures into the early half of next week. Another weak cold front will provide a bit more cloud cover around midweek...but dry condition will continue with high pressure returning for the second half of next week. && Short term.../issued at 920 PM/...tonight Surface front way down in the Ohio Valley. Fgen-related precipitation band is well to the north in southern/central lower Michigan...tending to weaken since afternoon. There might be a flurry or two in southern Gladwin/Arenac counties...but given snow has stopped at mbs...there certainly won't be much. However...cirrus deck has expanded back across most of northern lower Michigan. Grids have already been updated to increase cloud cover in the evening and early overnight...text products will reflect that shortly. Some thinning noted in western WI and points west...but it will take longer for that to happen here. And with that in mind... will tweak temperatures upward slightly in northern lower. The sault and Kinross already in the middle 20s...and temperatures will be adjusted downward in parts of eastern upper. Jz && Long term.../issued at 257 PM/...Sunday and beyond Sun through Tuesday...another fantastic stretch of early Spring weather in the works to welcome the new work week as heights gradually rebound with shortwave ridging slowly building into the Great Lakes. Meanwhile...elongated low level ridging will hang tough across the region as well...with a very dry airmass in place (pwats holding below 0.25 inches) supporting plentiful sunshine each day and clear skies at night. Said dry airmass coupled with moderation of low level thermal regime will easily allow temperatures to spike back well above normal right on through Tuesday...when readings should top 50 degrees in most spots. However...within light wind/dry air regime...nighttime lows will be back around normal for late March...mainly in the 20s (with a few teens in the usual cold spots). Later periods (tue night through sat)...quiet weather marches on as we head toward the end of the month. Overall upper air pattern across North America looks to remain dominated by briefly stable Rex block type pattern across Alaska...with broad upper ridging extending over the western Continental U.S. And persistent polar vortex drifting around northern Hudson Bay. This pattern will keep plenty of cold air across much of central/eastern Canada but rather progressive flow pattern across the lower 48 will provide little vehicle to transport the really cold stuff down this way. That being said...a few systems to note...basically one on Wednesday with medium range guidance showing weakening wave/cool front dropping through the area...and another later Thursday night or early Friday with a similar scenario. Neither system even close to impressive and both severely lacking moisture...increasing confidence that the dry weather pattern will persist right on through the week. Have sided heavily with the quite consistent 20/00z European model (ecmwf) solution (and to a lesser extent the 20/00z ggem) through the extended...as the GFS has been persistently way too wet and amplified with these northern stream waves the past few months...with its 20/00z and 06z solutions following that trend this go around. As such...envision a pattern with weaker northern stream systems skirting tight thermal gradient just north of the Great Lakes...and additional stronger southern stream energy sliding the Tennessee Valley right on through the week. In between...elongated low level ridging should dominate...with overall mainly sunny conditions...though at times interrupted with brief pushes of thicker middle/high level cloudiness (associated with weaker northern stream waves). Temperatures to remain above climatology through Wed/Thu...but likely cooling back down closer to reality Friday/Sat as some cooler air finally bleeds south into the region (though in all likelihood current guidance a bit too cold per recent trends). Lawrence && Marine.../issued at 257 PM/ High pressure will gradually build into the region heading through the early portions of the work week...supporting mainly light winds and low waves. By later Tuesday...increasing northeast fetch across Lake Huron may should support some higher waves near the northeast lower coastline...though appears conditions will remain below Small Craft Advisory criteria. A weak cold front will cross the waters later Tuesday night or early Wednesday and briefly shift winds northwesterly...with a return to high pressure in its wake then supplying low waves and winds once again Wednesday into Thursday. Lawrence && Aviation.../issued at 723 PM/...valid for 00z tafs Solidly VFR. Cirrus will thin out tonight as stalled front in the Ohio Valley become somewhat less active. Mainly clear skies expected Sunday. Jz && Apx watches/warnings/advisories... Michigan...none. Lm...none. LH...none. Ls...none. && $$