Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. Read More >
Ralston, Oklahoma Climatology
| Ralston, OK | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Average High Temperature | 47.6 | 53.5 | 62.6 | 72.3 | 79.6 | 87.5 | 93.1 | 93.3 | 84.9 | 73.7 | 61.1 | 48.7 | 71.6 | |
| Average Low Temperature | 22.5 | 26.8 | 35.4 | 45.6 | 56.5 | 65.1 | 69.3 | 67.6 | 58.4 | 46.4 | 34.7 | 24.6 | 46.2 | |
| Average Mean Temperature | 35.0 | 40.2 | 49.0 | 59.0 | 68.1 | 76.3 | 81.2 | 80.5 | 71.7 | 60.1 | 47.9 | 36.6 | 58.9 | |
| * Record High Temperature | 80 | 88 | 93 | 100 | 97 | 105 | 111 | 110 | 107 | 98 | 88 | 80 | 111 | |
| * Record Low Temperature | -11 | -10 | -1 | 18 | 29 | 44 | 49 | 43 | 30 | 21 | 6 | -13 | -13 | |
| Average Days Above 100 Degrees | 0 | 0 | 0 | 0 | 0 | 0.3 | 3.6 | 4.9 | 0.9 | 0 | 0 | 0 | 9.7 | |
| Average Days Above 90 Degrees | 0 | 0 | 0 | 0.5 | 1.5 | 10.4 | 22.2 | 21.5 | 8.2 | 0.5 | 0 | 0 | 64.9 | |
| Average Days Below 32 Degrees | 26.0 | 19.6 | 12.2 | 2.7 | 0 | 0 | 0 | 0 | 0.1 | 2.5 | 12.8 | 23.7 | 99.6 | |
| Average Days Below 10 Degrees | 3.1 | 1.8 | 0.2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.2 | 2.6 | 7.9 | |
| Average Rainfall | 1.31 | 1.74 | 3.52 | 3.75 | 5.36 | 4.97 | 3.39 | 3.91 | 3.91 | 3.18 | 2.40 | 1.94 | 39.38 | |
| * Record Rainfall | 5.55 | 5.41 | 8.24 | 7.83 | 11.75 | 15.55 | 11.62 | 11.32 | 12.80 | 8.06 | 5.21 | 5.36 | 54.78 | |
| Average Number of Rain Days | 3.7 | 4.2 | 6.5 | 6.6 | 8.3 | 8.0 | 5.4 | 5.6 | 6.2 | 5.8 | 4.7 | 4.8 | 69.8 | |
| Average Snowfall | 2.4 | 2.3 | 1.6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.2 | 2.5 | 9.0 | |
| * Record Snowfall | 15.0 | 12.5 | 13.5 | 2.0 | 0 | 0 | 0 | 0 | 0 | T | 7.5 | 11.0 | 33.0 | |
| Average Heating Degree Days | 928 | 696 | 503 | 223 | 50 | 3 | 0 | 0 | 32 | 200 | 517 | 879 | 4031 | |
| Average Cooling Degree Days | 0 | 1 | 7 | 42 | 144 | 342 | 502 | 479 | 232 | 46 | 4 | 0 | 1798 | |
| Station Information | Elevation: 830 ft / Latitude: 36 30N / Longitude: 96 44W | |||||||||||||
| Temperatures are reported in Fahrenheit and rainfall/snowfall totals are reported in inches. * Records are for the period 1948-1991. Averages are for the period 1981-2010. |
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Updated: September 30, 2011
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