www.lfweathercenter.com      Twitter Facebook NWS Grand Rapids, Michigan Weather Underground    

There are no active watches, warnings or advisories for Ingham County, Michigan.
- Mason Area Weather Stations -
Columbia Lakes # 1    Columbia Lakes # 2    W Columbia Rd near Onondaga Rd
Bond Park Area    N College Rd near Hogsback Rd
Mason Jewet Field Airport 72 Hour Observation History
Lansing Year To Date Climate Plot    Lansing Current Month Climate Plot

National Weather Service Forecast
Mason, Michigan, U.S.A.
Forecast issued at 6:03 pm EDT May 29, 2023 by the National Weather Service Grand Rapids, MI
4    D A Y    F O R E C A S T    A T    A    G L A N C E
 
Tonight

Tonight: Mostly clear, with a low around 56. East southeast wind 3 to 6 mph.
Mostly Clear
Tuesday

Tuesday: A slight chance of sprinkles after 2pm.  Sunny, with a high near 87. Calm wind becoming southeast 5 to 8 mph in the afternoon.
Slight Chance
Sprinkles
Tuesday
Night
Tuesday Night: A slight chance of sprinkles before 8pm.  Mostly clear, with a low around 61. South southeast wind 6 to 9 mph.
Slight Chance
Sprinkles
Wednesday

Wednesday: A 20 percent chance of showers.  Sunny, with a high near 88. South southeast wind around 10 mph.
Slight Chance
Showers
Wednesday
Night
Wednesday Night: Mostly clear, with a low around 62. Southeast wind 7 to 10 mph.
Mostly Clear
Thursday

Thursday: Sunny and hot, with a high near 91.
Hot
Thursday
Night
Thursday Night: Mostly clear, with a low around 61.
Mostly Clear
Friday

Friday: Mostly sunny and hot, with a high near 90.
Hot
Friday
Night
Friday Night: Partly cloudy, with a low around 61.
Partly Cloudy
 
Lo 56 °F Hi 87 °F Lo 61 °F Hi 88 °F Lo 62 °F Hi 91 °F Lo 61 °F Hi 90 °F Lo 61 °F
48 Hour Temperature and Dew Point Forecast
DEW POINT: 60-64=Slightly Humid, 65-69=Humid, 70-74=Very Humid, Greater than 74=Oppressively Humid
48 hour temperature forecast
48 Hour Precipitation Potential and Sky Cover Forecast
48 hour temperature forecast
48 Hour Rain and Thunder Forecast
48 hour precipitation forecast
48 Hour Wind Forecast
48 hour precipitation forecast
 
>>> 7 Day Forecast with Hourly Graphs <<<
Tonight through Sunday Night
 
  Tonight

Tonight: Mostly clear, with a low around 56. East southeast wind 3 to 6 mph.
Mostly Clear
  Lo 56 °F
 
Mostly clear, with a low around 56. East southeast wind 3 to 6 mph.
 
 
  Tuesday

Tuesday: A slight chance of sprinkles after 2pm.  Sunny, with a high near 87. Calm wind becoming southeast 5 to 8 mph in the afternoon.
Slight Chance
Sprinkles
  Hi 87 °F
 
A slight chance of sprinkles after 2pm. Sunny, with a high near 87. Calm wind becoming southeast 5 to 8 mph in the afternoon.
  Tuesday
Night
Tuesday Night: A slight chance of sprinkles before 8pm.  Mostly clear, with a low around 61. South southeast wind 6 to 9 mph.
Slight Chance
Sprinkles
  Lo 61 °F
 
A slight chance of sprinkles before 8pm. Mostly clear, with a low around 61. South southeast wind 6 to 9 mph.
 
 
  Wednesday

Wednesday: A 20 percent chance of showers.  Sunny, with a high near 88. South southeast wind around 10 mph.
Slight Chance
Showers
  Hi 88 °F
 
A 20 percent chance of showers. Sunny, with a high near 88. South southeast wind around 10 mph.
  Wednesday
Night
Wednesday Night: Mostly clear, with a low around 62. Southeast wind 7 to 10 mph.
Mostly Clear
  Lo 62 °F
 
Mostly clear, with a low around 62. Southeast wind 7 to 10 mph.
 
 
  Thursday

Thursday: Sunny and hot, with a high near 91.
Hot
  Hi 91 °F
 
Sunny and hot, with a high near 91.
  Thursday
Night
Thursday Night: Mostly clear, with a low around 61.
Mostly Clear
  Lo 61 °F
 
Mostly clear, with a low around 61.
 
 
  Friday

Friday: Mostly sunny and hot, with a high near 90.
Hot
  Hi 90 °F
 
Mostly sunny and hot, with a high near 90.
  Friday
Night
Friday Night: Partly cloudy, with a low around 61.
Partly Cloudy
  Lo 61 °F
 
Partly cloudy, with a low around 61.
 
 
  Saturday   Mostly sunny, with a high near 89.   Saturday Night   Partly cloudy, with a low around 60.  
 
  Sunday   Sunny, with a high near 89.   Sunday Night   Mostly clear, with a low around 59.  
 
 
 
NATIONAL WEATHER SERVICE
Winter Storm Severity Index
Probabilistic Snowfall Experiment
Forecast Page
Printable Forecast
Hourly Forecast Graph
>>> 7 Day Forecast with Hourly Graphs <<<
ADDITIONAL FORECAST SOURCES
CBS 6 - WLNS - Lansing, MI
NBC 10 - WILX - Lansing, MI
FOX 47 - WSYM - Lansing, MI

AccuWeather
The Weather Channel
S E V E R E    W E A T H E R    I N F O R M A T I O N
- Grand Rapids, Michigan Radar -
- Current Weather Statements -
- Severe Weather Outlook -
Click to visit National Weather Service Click to visit National Weather Service Click for Severe Weather Outlook
 
Midwest Radar
Click for More Features
 
Midwest Satellite
Click for More Features
 
Day 1 Precipitation Quantity Forecast
Day 1 Precipitation Forecast - Day 1
Day 1 Excessive Rainfall Forecast
Day 1 Excessive Rainfall Forecast - Day 1
Day 1 Probability of at least 4 inches of Snow
Day 1 4 inch Snow Probabilities - Day 1
 
Advisories to the south
Advisories South
National Weather Service
Grand Rapids, Michigan, U.S.A.
-    A R E A    F O R E C A S T    D I S C U S S I O N    -
Forecast Discussion for GRR NWS Office
000 FXUS63 KGRR 291909 AFDGRR  Area Forecast Discussion National Weather
Service Grand Rapids MI 308 PM EDT Mon May 29 2023  LATEST UPDATE... Short
Term/Long Term/Marine/Fire Weather/Climate  .SHORT TERM...(This evening
through Tuesday night) Issued at 308 PM EDT Mon May 29 2023  The upper-air
pattern continues to be characterized by a Rex block over eastern North
America, comprised of an upper high over the Great Lakes an upper low over
the southeast CONUS, with fairly weak tropospheric flow over the region. At
the surface, a broad synoptic ridge is draped over the region -- extending
from a high over eastern Canada -- with a weak/diffuse surface low over the
mid Atlantic coast. This regime is maintaining weak low-level easterly flow
on a broad scale, but a mesoscale lake-breeze circulation has developed
again this afternoon, similar to recent days.  A modest increase in
southeasterly low-level flow (10-20 kts at 925 mb) tonight should
facilitate weak low-level moisture transport into the region. Short-range
guidance suggests that surface dewpoints should generally increase after
daybreak Tue as the convective boundary layer deepens and entrains this
moisture, with mid 40s-mid 50s dewpoints likely to be common across the
area during the afternoon. The arrival of this low-level moisture -- with a
corresponding reduction in convective temps (likely into the mid 80s F) --
should yield widespread cumulus development across inland areas on Tue,
given sufficient boundary-layer warming. High temps on Tue will likely be
warmer than today, reaching the upper 80s to around 90 F across inland
areas, given the expectation of warmer 850- mb temps.  12z HREF guidance
suggests that isolated showers may develop on Tue afternoon along/east of
the lake-breeze front, where cumulus may become sufficiently deep. However,
RAP forecast profiles indicate a fairly deep and dry subcloud boundary
layer, suggesting that evaporation/virga will be substantial beneath any
precip-producing clouds. Will opt to maintain PoPs below 15 percent
(threshold for slight-chance showers) with this update, but will introduce
a slight chance of sprinkles away from the lakeshore.  .LONG
TERM...(Wednesday through Monday) Issued at 308 PM EDT Mon May 29 2023  Our
focus in the long term portion of the forecast will be on rain chances,
albeit small ones, through much of the period from Wednesday through
Sunday, with some possible better chances for rain coming next Monday. We
will see a trend of warmer temperatures through next weekend, and generally
a slow increase in moisture. The moisture trend is a bit complicated, and
we will discuss further below.  Upper ridge will remain in control of the
weather across the area into early next weekend in one form or another.
This will keep widespread and appreciable rain out of the area likely into
next weekend.  There are caveats to this thinking though as we will see the
potential for a few mainly diurnal showers and storms increase slightly for
Wednesday and Thursday. What happens is that we will see a bit higher
moisture move in with a southerly component to the low level flow develop.
This will bring in sfc dew points into the 50s, and maybe even 60s by
Thursday. This moisture will combine with a fairly stout lake breeze
convergence band that is forecast by the models to pop a few showers and
storms in the afternoon. Convergence is almost maximized with a synoptic
flow from the SE, and a lake breeze from the NW developing. So while most
of the area will stay dry, there could be some locally heavy downpours with
slow moving cells as the lake breeze moves further inland.  The rain
chances might be stunted a bit for Friday and Saturday as the flow becomes
more easterly by then, and advects a pocket of much drier air over the
area. Temperatures will continue to warm at least a couple of degrees per
day with almost full sun and good mixing taking place.  We are then looking
at a pattern change poised to take place in one way or another sometime
next Sunday/Monday, with details to be ironed out. The general sense is
that some strong upper energy across Canada will drop south and push a
fairly potent backdoor cold front south through the area on the front side
of the large scale ridge across the Plains.  The interesting part of this
is that the last data shows an upper low rotating toward the area from the
NE, and a moisture feed off of the Atlantic. However this happens is quite
uncertain at this time. There is a fairly decent signal in the Ensemble
means that cooler air will replace the heat toward next weekend and then
the following week. Rain chances will be quite uncertain depending on if
the front will have some moisture to tap as it moves through, but it will
be a better chance that strong ridging overhead. 

NWS GRR Office Area Forecast Discussion

Never base important decisions on this or any weather information obtained from the Internet
Weather Advisory & NWS Forecast PHP Scripts courtesy of saratoga-weather.org