AGRICULTURAL/LAWN & GARDEN WEATHER FORECAST (ETA) GUIDANCE FOR Wash-Dulles, VA UKAWC/NWS KIAD NAM MOS GUIDANCE 12 /09 /2008 1200 UTC AFTERNOON: ---------- The high today will be 54 degrees with 0% area coverage of precip in the amount of 0.00-0.01 inches. The maximum dewpoint from 2 p.m. to 8 p.m.(EDT) will be 45 degrees with a minimum dewpoint of 35 degrees. The temperatures and dewpoints today will produce a low relative humidity near 55%. The winds will begin from the S and end out of the S with an average wind speed of 13 mph. The wind speeds will range from 12 mph to 15 mph throughout the period creating 4 hours of unfavorable spraying conditions, 3 hours of marginal conditions, and 0 hours of favorable spraying conditions. Skies today at 2:00 p.m. will be cloudy with a total of 0 hours of sunny skies, 0 hours of partly cloudy skies, 0 hours of mostly cloudy skies, and 7 hours of cloudy skies during the time period. TONIGHT: -------- The low tonight will be 50 degrees with 90% area coverage of precip in the amount of 0.01-0.09 inches. The maximum dewpoint from 8 p.m. to 8 a.m.(EDT) will be 50 degrees with a minimum dewpoint of 46 degrees. The temperatures and dewpoints tonight will produce a high relative humidity near 85%. The winds will begin from the S and end out of the SW with an average wind speed of 15 mph. The wind speeds will range from 13 mph to 17 mph throughout the period creating 12 hours of unfavorable spraying conditions, 0 hours of marginal conditions, and 0 hours of favorable spraying conditions. Skies tonight at 2:00 a.m. will be cloudy with a total of 0 hours of clear skies, 0 hours of partly cloudy skies, 0 hours of mostly cloudy skies, and 12 hours of cloudy skies during the time period. The forecasted leaf wetness due to dew formation for the time period is for 0 hours. TOMORROW: --------- The high tomorrow will be 60 degrees with 90% area coverage of precip in the amount of 0.01-0.09 inches. The maximum dewpoint from 8 a.m. to 8 p.m.(EDT) will be 57 degrees with a minimum dewpoint of 51 degrees. The temperatures and dewpoints tomorrow will produce a low relative humidity near 90%. The winds will begin from the SW and end out of the SW with an average wind speed of 12 mph. The wind speeds will range from 8 mph to 14 mph throughout the period creating 7 hours of unfavorable spraying conditions, 5 hours of marginal conditions, and 0 hours of favorable spraying conditions. Skies tomorrow at 2:00 p.m. will be cloudy with a total of 0 hours of sunny skies, 0 hours of partly cloudy skies, 0 hours of mostly cloudy skies, and 12 hours of cloudy skies during the time period. * NOTE: See ETA Ag Wx Data for specific times.