Actual temperature or dashboard reading does not count. Coaches are responsible for monitoring wind chill.
The main reasons we are at the park are to have fun and improve baseball skills. If the temperature is miserable, neither is happening.

East Side Baseball's official source for Wind Chill is the National Weather Service (forecast.weather.gov). This page shows current wind chill; to see forecast go to Hourly Weather Forecast on the right side. Can tap on the graphs to see actual numeric values. 

NOTE: Quite often morning predicted wind chill is different from actual wind chill at practice time, sometimes 8-10 degrees different; re-check right before practice time. Also, some weather sites occasionally show erroneous wind chill numbers. NWS is considered ESBA's official site. In case of inclement weather, check here for field status - usually updated by 4:00 pm weekdays when possible. If nothing is posted, assume games are on unless you hear otherwise from your coach.

Either click the Weather Forecast button for an hourly forecast graph, or click the weather widget on the ESBA home page, then click on today's current temperature. You will get to the National Weather Service website showing current temperature and wind chill and can access the hourly graphs that will show predicted temps, wind chill and precipitation. (ESBA set this weather policy based on member survey -- Nobody's having fun or improving baseball skills when it's miserable weather conditions so, why be out there?)

WET FIELD REMINDERS
Don't rake, drag, sweep or walk on wet fields - more than triples drying time.
Puddles need to be carefully evacuated, not swept or raked.
Never hand drag a field when dirt is moist - makes worse - can rake when almost dry.