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.

Thu, Apr 18, 2019 4:57:37 AM Thu, Apr 18, 2019 4:56:30 AM¹
Current Values Past 24 hours
 Temperature   40 °F   falling 0.3 °F/hour   Maximum:   58 °F   at 14:41:30, 4/17/2019 
 Minimum:   36 °F   at 07:05:30, 4/17/2019 
 Mean²:   47 °F 
 Average³:   47 °F 
 Relative Humidity   66 %   falling 1.1 %/hour   Maximum:   91%   at 05:00:30, 4/17/2019 
 Minimum:   24%   at 14:43:30, 4/17/2019 
 Mean²:   58% 
 Average³:   51% 
 Dewpoint   29 °F   falling 0.7 °F/hour   Maximum:   36 °F   at 05:01:30, 4/17/2019 
 Minimum:   20 °F   at 16:24:30, 4/17/2019 
 Mean²:   28 °F 
 Average³:   28 °F 
 Mean Sea Level Pressure   29.84 in. Hg   rising 0.022 in. Hg/hour   Maximum:   30.03 in. Hg   at 18:38:30, 4/17/2019 
 Minimum:   29.64 in. Hg   at 05:00:30, 4/17/2019 
 Mean²:   29.83 in. Hg 
 Average³:   29.89 in. Hg 
Station Pressure   25.26 in. Hg   Maximum:   25.38 in. Hg   at 14:53:30, 4/17/2019 
 Minimum:   25.07 in. Hg   at 04:58:30, 4/17/2019 
 Mean²:   25.22 in. Hg 
 Average³:   25.28 in. Hg 
 Wind Speed   1 mph from SSE (154)   Maximum:   23 mph from NW (317°)   at 17:41:30, 4/17/2019 
 Average³:   5 mph 
 Wind Direction   Average4  from WNW (301°) 
 Solar Irradiance   0.02 cal/cm²/min   rising 0.000 (cal/cm²/min)/hour   Maximum:   2.06 cal/cm²/min   at 14:01:30, 4/17/2019 
 Average³:   0.47 cal/cm²/min 
 Rainfall this month   1.10 in. 
 Rainfall since midnight   0.00 in.   Past 24 hours   0.00 in. 
 Maximum rate   0.000 in./hour   at 05:02:30, 4/17/2019 
 Wind-Chill Temperature   40 °F   Maximum:   58 °F   at 14:41:30, 4/17/2019 
 Minimum:   34 °F   at 07:19:30, 4/17/2019 
 Mean²:   46 °F 
 Average³:   47 °F 
 Heat Index   40 °F   Maximum:   59 °F   at 14:42:30, 4/17/2019 
 Minimum:   36 °F   at 07:05:30, 4/17/2019 
 Mean²:   47 °F 
 Average³:   48 °F 

Click here for metric units.

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¹ The time for the Past 24-hours values is the time those values were last updated. It is usually before the current time because the history values are only updated every few minutes.
² The mean is the midrange or midextreme value: (max(x)+min(x))/2. In the weather industry this can be referred to as either the mean daily value or the average daily value.
³ The average given here is 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 insolation, 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.
4 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 24-hour period.