OlallaWx.org

Weather Forecast Comparison

Explanation: The NWS Forecast forecast is provided by the National Weather Service. The OlallaWx.org forecast is generated locally using WXSIM forecasting software, customized for Olalla, WA and operated by OlallaWx.org.

About the Forecasts

OlallaWx.org uses WXSIM forecasting software — a sophisticated, locally-run weather prediction system designed to provide highly customized forecasts specifically for the Olalla, WA area.

• Local tuning: The forecast is calibrated using current data from local OlallaWx weather stations including the Davis Vantage Pro 2 and Ambient WS-5000.
• Historical learning: OlallaWx refines NWS forecasts by learning from past local OlallaWx weather patterns.
• Hands-on control: Forecasts are generated and reviewed directly at OlallaWx.org.
• Frequent updates: Updated approximately every two hours.

How it compares to NWS:

NWS Forecast	OlallaWx.org Forecast	Forecast
Today Slight Chance Snow Showers Hi 44 °F	Tonight Partly Cloudy Low: 36°	NWS: A slight chance of snow showers before 2pm, then a slight chance of rain and snow showers between 3pm and 5pm. Mostly sunny, with a high near 44. South southwest wind around 6 mph. Chance of precipitation is 20%. OlallaWx: Partly cloudy in the evening, becoming cloudy after midnight. Low 36°. Wind south-southwest around 4 mph.
Tonight Mostly Cloudy Lo 31 °F	Friday Chance rain High: 43°	NWS: Mostly cloudy, with a low around 31. Southeast wind 2 to 6 mph. OlallaWx: Dense overcast. A slight chance of rain in the morning, then a chance of rain in the afternoon. High 43°. Wind south-southwest around 4 mph. Chance of precipitation 60 percent. Precipitation mostly less than a quarter of an inch.
Sunday Rain And Snow Hi 46 °F	Friday night Rain likely Low: 37°	NWS: Rain and snow after 11am. Mostly cloudy, with a high near 46. East southeast wind around 5 mph. Chance of precipitation is 80%. New rainfall amounts less than a tenth of an inch possible. OlallaWx: Cloudy in the evening, becoming mostly cloudy after midnight. Light to moderate fog. Rain likely in the evening, then a slight chance of rain after midnight. Low 37°. Wind south-southwest around 5 mph. Chance of precipitation 60 percent. Precipitation mostly less than a quarter of an inch.
Sunday Night Light Rain Lo 41 °F	Saturday Chance rain High: 43°	NWS: Rain. Cloudy, with a low around 41. South southeast wind around 7 mph. Chance of precipitation is 80%. New rainfall amounts less than a tenth of an inch possible. OlallaWx: Mostly cloudy in the morning, becoming cloudy in the afternoon. Patchy light fog. A slight chance of rain in the morning, then a chance of rain in the afternoon. High 43°. Wind south-southwest around 3 mph in the morning, becoming northeast in the afternoon. Chance of precipitation 40 percent. Precipitation mostly less than a tenth of an inch.
Monday Light Rain Hi 53 °F	Saturday night Fog Low: 34°	NWS: Rain. Cloudy, with a high near 53. South wind 7 to 10 mph. Chance of precipitation is 80%. New rainfall amounts less than a tenth of an inch possible. OlallaWx: Mostly cloudy to cloudy in the evening, becoming partly to mostly cloudy after midnight. Light to moderate fog. Low 34°. Wind north-northeast around 6 mph.
Monday Night Light Rain Lo 45 °F	Sunday Fog a.m. High: 47°	NWS: Rain. Cloudy, with a low around 45. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible. OlallaWx: Partly to mostly cloudy. Light to moderate fog in the morning. High 47°. Wind north-northeast around 6 mph.
Tuesday Light Rain Hi 54 °F	Sunday night Fog late Low: 33°	NWS: Rain. Cloudy, with a high near 54. OlallaWx: Partly to mostly cloudy in the evening, becoming mostly cloudy after midnight. Patchy light fog after midnight. Low 33°. Wind north-northeast near calm.