MONTHLY WEATHER DATA AND OBS - LAVALE MD SEPTEMBER 2009 OBSERVER SCOTT LOHR DATA COMPILED BY NATE MULLINS Special Observations: F=fog, T=thunder, H=hail, S=sleet, G=glaze, DW=damaging winds Observation time for this station is midnight. Temperature, °F Precipitation, In. Liquid Solid 7am 24-hour Rain Snow/ Snow Special Date Max Min Equiv Ice Depth Obs Day's Weather Summary 1 72 48 Partly cloudy 2 74 47 Partly cloudy 3 78 49 Partly cloudy 4 78 51 Partly cloudy 5 86 54 Partly cloudy, very warm, increasing humidity 6 75 56 Partly cloudy becoming mostly cloudy 7 76 68 .06 Mostly cloudy with very light showers 8 72 64 .03 Predawn shower then mostly cloudy 9 72 60 .09 Predawn shower, overcast 10 69 58 .10 Overnight rain, NE breezes, decreasing clouds late 11 68 53 Mostly cloudy 12 70 58 Partly sunny, breezy 13 82 62 Partly cloudy, breezy, warmer 14 82 56 Partly cloudy 15 80 58 F AM fog becoming partly sunny 16 75 58 F AM fog becoming partly sunny 17 60 59 .31 F Occasional rain showers, cool steady temperatures 18 77 58 F Mostly cloudy, later becoming partly cloudy 19 77 52 Partly cloudy 20 78 48 Partly cloudy 21 76 58 Partly cloudy, mostly cloudy late 22 76 63 Mostly cloudy becoming partly sunny 23 87 62 .11 F,T AM fog, partly cloudy, very warm, brief PM t-storm 24 80 67 Partly cloudy 25 69 61 .16 Overnight rain, PM clearing 26 61 54 1.06 Steady rain, heavy at times 27 66 54 .04 AM showers, PM clearing, breezy 28 64 51 .21 Partly to mostly cloudy, PM rain, windy 29 56 53 Partly sunny, cool, windy 30 56 51 Partly sunny AVG/SUM 73.1 56.4 2.17 0 - EXT 87 47 1.06 - - Date 23 2 26 - - *=Also occurred on earlier dates Miscellaneous Stats Mean Monthly Temperature: 64.7 F Year precipitation to date: 30.81" Season snowfall to date: 0.0" Number of days with: Fog 5 Thunder 1 NOTES/SIGNIFICANT EVENTS 7: Low of 68 sets new record high min temperature for date. 17: High 60 Low 59 only 1 degree difference between High and Low, very rare. 0.31" rainfall. 23: Very warm and humid with a brief early evening thunderstorm. 24: Mild overnight low 67 F. 26: Steady rain all day, heavy at times, 1.06" of rainfall. 28: Strong cold front, early PM showers, very windy this afternoon & evening 29: Cool and windy MONTHLY SUMMARY September's weather was relatively uneventful, with slightly above normal temperatures, again owing to well above normal minimum temperatures, as has been the pattern lately. The coolest temperatures were at the beginning of the month, with 40s on the first three mornings, while the warmest day was towards the end, on the 23rd, the only day of the month with any thunder observed. Most of the month's precip fell from a series of systems from the 23rd-28th. About half the month's rain fell from a steady rain event on the 26th. Temperatures during the final week finally began to feel like fall. September was also a breezy month, particularly towards the end, with winds gusting 30+ mph on the 28th and 29th. Additional notes/records 24: Record high min 67 F 30: Record low max 56 F