Weather for Lihue, HI. Overcast 69.6Â° Feels like 69.6Â° High: 79Â° Low: 72Â° Current conditions as of 04/21/17 5:40 AM HST. Humidity: 91% Visibility: 10.0 mi Dewpoint: 67Â° Barometer: 30.06 in Wind: SW Sunrise: 6:12 AM Sunset: 06:59 PM.
The American Concrete Institute recommends a maintained temperature of 70 degrees F for three days or 50 degrees F for five days to gain sufficient strength for a cold pour to perform up to specification.
We had a 20' x 40' cement slab poured in 60 degree weather yesterday. The temperature got around 30 degrees in the night. Today's high was 39 and now it's 21 degrees with a possible wind chill of -5 to -8 in the night. The contractor covered it with a heavy black plastic looking sheet.