Weather Summary for January 2007

Brigham Young University, Department of Physics and Astronomy

Eyring Science Center, Provo, Utah

Mean Values
ValueMonthly MeanMonthly AverageAverage MinimumAverage Maximum
Temperature 23.4 F ( -4.77 C) 21.3 F ( -5.93 C) 12.5 F (-10.83 C) 34.3 F ( 1.28 C)
Humidity 64.5% 70.0% 39.8% 89.2%
Dew Point 12.0 F (-11.09 C) 12.2 F (-10.99 C) 7.1 F (-13.81 C) 16.9 F ( -8.38 C)
Pressure 30.14 in. Hg (102.1 kPa) 30.17 in. Hg (102.2 kPa) 29.99 in. Hg (101.6 kPa) 30.30 in. Hg (102.6 kPa)
Absolute Pressure 25.10 in. Hg ( 85.0 kPa) 25.10 in. Hg ( 85.0 kPa) 24.98 in. Hg ( 84.6 kPa) 25.21 in. Hg ( 85.4 kPa)
Wind Speed 0.4 mph ( 0.19 m/s) 6.1 mph ( 2.72 m/s)
Solar Irradiance 0.17 cal/min/cm2 ( 116. W/m2) 0.68 cal/min/cm2 ( 477. W/m2)
Wind Chill 22.6 F ( -5.22 C) 22.6 F ( 22.60 C) 11.2 F (-11.56 C) 34.0 F ( 1.12 C)
Heat Index 23.4 F ( -4.77 C) 21.3 F ( 21.33 C) 12.5 F (-10.83 C) 34.3 F ( 1.28 C)

Monthly rainfall: 0.50 in. ( 12.7 mm)
Maximum daily rainfall: 0.25 in. ( 6.3 mm) on 4
Maximum rainfall rate: 0.171 in./hour ( 4.34 mm/hour) on 4 at 16:18:23
Heating degree-days (base 65): 1289.5 (Maximum: 57.0 on 15)
Cooling degree-days (base 65): 0.0 (Maximum: 0.0 on 31)
Growing degree-days (base 40): 0.0 (Maximum: 0.0 on 31)
Growing degree-days (base 50): 0.0 (Maximum: 0.0 on 31)

Extreme Values
ValueLowestonatHighestonat
Maximum Temperature 17.8 F ( -7.90 C) 14 13:59:23 57.0 F ( 13.92 C) 10 13:46:23
Minimum Temperature -2.8 F (-19.32 C) 15 08:18:23 28.3 F ( -2.04 C) 4 23:40:23
Maximum Humidity 79.6% 8 23:59:23 96.3% 4 19:41:23
Minimum Humidity 16.6% 10 13:40:23 66.9% 1 13:19:23
Maximum Dew Point 1.9 F (-16.70 C) 15 15:17:23 29.6 F ( -1.36 C) 4 12:48:23
Minimum Dew Point -7.6 F (-21.98 C) 15 08:18:23 18.0 F ( -7.76 C) 1 18:46:23
Maximum Pressure 29.69 in. Hg (100.5 kPa) 11 22:57:23 30.72 in. Hg (104.0 kPa) 15 11:21:23
Minimum Pressure 29.32 in. Hg ( 99.3 kPa) 11 01:47:23 30.41 in. Hg (103.0 kPa) 8 01:38:23
Maximum Absolute Pressure 24.74 in. Hg ( 83.8 kPa) 11 11:44:23 25.56 in. Hg ( 86.5 kPa) 7 11:29:23
Minimum Absolute Pressure 24.61 in. Hg ( 83.4 kPa) 11 06:34:23 25.37 in. Hg ( 85.9 kPa) 8 01:36:23
Maximum Wind Speed 1.1 mph ( 0.51 m/s) at 126. deg. 30 19:27:23 23.7 mph (10.59 m/s) at 130. deg. 4 01:33:23
Maximum Solar Irradiance 0.22 cal/min/cm2 ( 151. W/m2) 6 12:48:23 1.09 cal/min/cm2 ( 759. W/m2) 29 11:32:23
Maximum Wind Chill 17.4 F ( -8.12 C) 14 13:59:23 56.9 F ( 13.83 C) 10 13:46:23
Minimum Wind Chill -3.1 F (-19.49 C) 15 08:19:23 23.3 F ( -4.85 C) 3 07:38:23
Maximum Heat Index 17.8 F ( -7.90 C) 14 13:59:23 57.0 F ( 13.92 C) 10 13:46:23
Minimum Heat Index -2.8 F (-19.32 C) 15 08:18:23 28.3 F ( -2.04 C) 4 23:40:23