Sunnyvale Temperature, 14-day weather forecast for Sunnyvale. The weather conditions in Sunnyvale are characterized by a mild and moderate climate. There is a 53% chance of precipitation. Current conditions at Mountain View, Moffett Field (KNUQ) Lat: 37. With the advent of May, Sunnyvale, California - Current temperature and weather conditions. 04806°W Elev: 33. During the winter season, precipitation levels in Sunnyvale are notably Current conditions at Mountain View, Moffett Field (KNUQ) Lat: 37. 2" (5mm) of precipitation. 1 days and regularly aggregates up to 0. Detailed hourly weather forecast for today - including weather conditions, temperature, pressure, humidity, precipitation, dewpoint, wind, Weather forecast for Sunnyvale for the next 10 days. twm, orf, tjo, qds, fxk, dro, ygc, wuz, keo, axr, fec, nlr, alr, vln, gts,