Summary of the past 24 hours from the unofficial station on the roof of the Eyring Science Center on the campus of Brigham Young University in Provo, Utah, USA.

Sun, Nov 22, 2009 9:15:30 PM
 Temperature   Maximum:   49oF   at 12:35:30, 11/22/2009 
 Minimum:   24oF   at 06:17:30, 11/22/2009 
 Mean1:   37oF 
 Average2:   34oF 
 Relative Humidity   Maximum:   90.7%   at 19:20:30, 11/22/2009 
 Minimum:   24.0%   at 16:10:30, 11/22/2009 
 Mean1:   57.4% 
 Average2:   55.0% 
 Dewpoint   Maximum:   29oF   at 19:20:30, 11/22/2009 
 Minimum:   11oF   at 13:30:30, 11/22/2009 
 Mean1:   20oF 
 Average2:   18oF 
 Sea Level Pressure   Maximum:   29.90 in. Hg   at 09:43:30, 11/22/2009 
 Minimum:   29.65 in. Hg   at 17:24:30, 11/22/2009 
 Mean1:   29.77 in. Hg 
 Average2:   29.81 in. Hg 
Station Pressure   Maximum:   24.98 in. Hg   at 10:31:30, 11/22/2009 
 Minimum:   24.80 in. Hg   at 17:10:30, 11/22/2009 
 Mean1:   24.89 in. Hg 
 Average2:   24.92 in. Hg 
 Wind Speed   Maximum:   43 mph from NNW (329o )  at 18:17:30, 11/22/2009 
 Average2:   3 mph 
 Wind Direction   Average3:   from NNW (334o) 
 Solar Irradiance   Maximum:   1.07 cal/cm2/min   at 12:12:30, 11/22/2009 
 Average2:   0.17 cal/cm2/min 
 Rainfall this month   0.28 in. 
 Rainfall since midnight   0.00 in. 
 Past 24 hours   0.00 in. 
 Maximum rate   0.000 in./hour   at 21:17:00, 11/21/2009 
 Wind-Chill Temperature   Maximum:   48 oF   at 12:00:30, 11/22/2009 
 Minimum:   13 oF   at 20:58:30, 11/22/2009 
 Mean1:   30 oF 
 Average2:   32 oF 
 Heat Index   Maximum:   50 oF   at 12:35:30, 11/22/2009 
 Minimum:   25 oF   at 06:15:30, 11/22/2009 
 Mean1:   37 oF 
 Average2:   34 oF 

1 The mean (in the weather industry this can be referred to as either the mean daily value or the average daily value) is actually known statistically as the midrange or midextreme value: (max(x)+min(x))/2.
2 The average given here is also known statistically as the arithmetic mean: Σxi/N where the sum is performed over the available data for the previous 24-hour period. Normally the available data is the 1-minute average (arithmetic mean of data taken once per second) for temperature, humidity, mean sea-level pressure, station pressure, solar irradiance, and dewpoint. For wind chill the 1-minute value is the minimum recorded over that period. For wind speed and heat index it is the maximum during the period.
3 The average wind direction is the vector average which incorporates both the direction and speed. It is the net direction a parcel of air would have moved if you could track it over the 1-minute period.

Click here for metric units

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