Back to December, 2009's Index

Weather on December, 20, 2009

Maximum temperature (degrees C): 1.1 (34.0 F)
Minimum temperature (degrees C): -6.1 (21.0 F)
Precipitation (mm): 3.3 (0.130 in)
Snowfall (mm): 46.0 (1.811 in)
Snow depth (mm): 254.0 (10.000 in)
Observed: Rain (may include freezing rain, drizzle, and
freezing drizzle)
Observed: Snow, snow pellets, snow grains, or ice crystals
Peak gust time (hours and minutes, i.e., HHMM):  1635
Average daily wind speed (meters per second): 4.4 (9.8 mph)
Time of fastest mile or fastest 1-minute wind
(hours and minutes, i.e., HHMM):  2300
Direction of fastest 2-minute wind (degrees): 290.0
Direction of fastest 5-second wind (degrees): 310.0
Fastest 2-minute wind speed (meters per second): 9.4 (21.0 mph)
Fastest 5-second wind speed (meters per second): 14.8 (33.1 mph)
Observed: Fog, ice fog, or freezing fog (may include heavy fog)
Observed: Heavy fog or heaving freezing fog (not always
distinquished from fog)
Observed: Mist
Observed: Ice fog or freezing fog
Average Dew Point Temperature for the day (degrees C): -10.6 (12.9 F)
Average Sea Level Pressure for the day (hPa): 1006.4
Average Station Level Pressure for the day (hPa): 1000.7
Average Wet Bulb Temperature for the day (degrees C): -5.0 (23.0 F)
Average relative humidity for the day (percent): 56.0
Minimum relative humidity for the day (percent): 33.0
Maximum relative humidity for the day (percent): 92.0