NDAWN Station: Williston, ND
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Normals
| Normal Max Temp: | 28 °F / -2 °C |
| Normal Avg Temp: | 20 °F / -7 °C |
| Normal Min Temp: | 11 °F / -12 °C |
| Normal Accumulated HDD: | 7007 °F / 3893 °C |
| Normal Accumulated CDD: | 648 °F / 360 °C |
Extremes
Temperatures
| Highest Daily Max Temp: | 108 °F (42 °C) |
| 2007-07-24 at 3:51 PM CST | |
| Lowest Daily Max Temp: | -23 °F (-31 °C) |
| 1997-01-10 at 11:10 PM CST | |
| Highest Daily Min Temp: | 73 °F (23 °C) |
| 2003-08-12 at 6:05 AM CST | |
| Lowest Daily Min Temp: | -33 °F (-36 °C) |
| (estimated) 1996-02-01 at 7:24 AM CST | |
| Highest Daily Dew Point Temp: | 71 °F (22 °C) |
| 1995-06-15 | |
| Lowest Daily Dew Point Temp: | -36 °F (-38 °C) |
| 1996-02-01 | |
| Lowest Daily Wind Chill Temp: | -58 °F (-50 °C) |
| 1996-02-01 |
Wind
| Highest 5-Second Avg Wind Speed: | 65.2 mph (29.1 m/s) |
| 1995-07-29 at 10:57 PM CST | |
| 2005-06-21 at 2:22 AM CST | |
| Highest Avg Hourly Wind Speed: | 39.6 mph (17.7 m/s) |
| 1991-06-25 for hour ending at 5:00 AM CST | |
| Highest Avg Daily Wind Speed: | 28.7 mph (12.8 m/s) |
| 1997-04-05 |
Rainfall
| Highest Daily Rainfall: | 5.21 inch (132.3 mm) |
| 1997-07-01 |
Most Consecutive Days with:
| Rainfall >= 0.01 inches: | 9 days |
| 1999-05-08 - 1999-05-16 | |
| Rainfall >= 0.10 inches: | 4 days |
| 1993-07-02 - 1993-07-05 | |
| 2002-08-06 - 2002-08-09 | |
| 2003-05-04 - 2003-05-07 | |
| Rainfall >= 1.00 inches: | 2 days |
| 1993-07-02 - 1993-07-03 |
Solar Radiation
| Maximum Daily Solar Radiation: | 777 Lys (32.5 MJ/m2) |
| (estimated) 1991-07-09 |
Potential Evapotranspiration
| Maximum PET (Jensen-Haise): | 0.39 inch (10 mm) |
| 2002-07-14 | |
| Maximum PET (Penman): | 0.53 inch (13 mm) |
| 1990-07-13 |
