Various free local weather forecasts are available on the internet. Here are a couple to choose from:
The Met Office -
www.metoffice.gov.uk/weather/forecast/gbvqujhfw# (Totnes)
also includes Sunrise & Sunset Times
XC Weather - www.xcweather.co.uk/forecast/harberton - A simple graphical 7-day look ahead.
Metcheck - Another simple graphical website, 48 hours / 16 days
Totnes tide times from UK Hydrographic Office (EasyTide, 7-day prediction)