XGY   Grimsby Mountain, ON
Weather Observed At   43-11  N    79-34  W
 
*** AURBO GREEN WARNING IN EFFECT ***
overhead
  2026-01-21 4:30am Max
Min
  Weather
----



  Temperature
 -9.8 °C
 -9.8 °C
   4:28am
 -11.6 °C
  12:42am
  Relative Humidity
 76 %
81 %
 12:00am
 73 %
  1:32am
  Dew Point
 -13.3 °C
 -13.3 °C
   4:10am
 -14.4 °C
  12:26am
  Wind Velocity
 188 ° at  3.2 G 6.1 kt
 9.6 kt
   1:20am
  Pressure
     30.312 in  ↓
30.377 in
  12:00am
 30.308 in
   4:23am
  Rainfall Rate
 0.0 mm/h 0.0 mm/h
  ----m
  Snow On Ground 14 cm

  Brightness / Darkness   0 W/m² /  18.33 m/as² 0 W/m²
  ----m
   19.27 m/as²   11:59pm
  Remarks
  
  RainfallToday
 0.0 mm
 Storm Total
 0.0 mm
  SnowfallToday
0.0 cm
 Storm Total
0.0 cm
  Evapotranspiration Today
 -0.00 mm

  Lake Conditions
   Water Temperature  --- °C
   Waves  ---
OPEN DRIFT ICE
  Meteor Index
5   Random
  Aurora Index
250   Major Storm   - 6 nT   Solar Flux   178  sfu  /   S 2    R 1    G 4   /  MUF   38.5 MHz
  Sunrise 7:44am
   Sunset 5:16pm
  Moonrise N/A
  Moonset N/A
  Moon Phase Waxing Crescent
Grimsby Mountain Weather Maps
Local Regional Area Synoptic

     
updated H+09 and every 10m updated H+19 and H+49
 updated H+19

Canadian 6-Hour Meteorological Summaries

Grimsby Mountain Charts

 





 




Sky Quality (Darkness) Meter courtesy of  www.Unihedron.com

Wx Map Sat Pix
 IR Sat Pix Radar Lightning

Water
 Ice




WX & SKY
MSC     TWN

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