Westborough Weather Forecast
- 48
- 63
Slight Chance Rain
- 53
- 65
Rain Likely
- 54
- 62
Rain
- 52
- 64
Slight Chance Rain
- 53
- 66
Partly Sunny
- 53
- 68
Mostly Cloudy
Today 22 Feb San Francisco Bay Shoreline
Mostly cloudy in the morning then becoming partly cloudy. Highs in the mid 60s. South Winds 5 to 15 Mph.
Tonight 22 Feb San Francisco Bay Shoreline
Partly cloudy. Patchy fog after midnight. Lows in the mid 40s. South Winds around 5 Mph in the evening. Becoming light.
Westborough Temperature Statistics
February Temperature
San Francisco, San Francisco International Airport (5 miles)
Lowest 18 February, 2026
41 °FAverage February
54.6 °FHighest 2 February, 2026
68.6 °F
Climate (2021–Present)
San Francisco, San Francisco International Airport (5 miles)
Average Low 2021–2026
52.4 °FAverage 2021–2026
58.3 °FAverage High 2021–2026
66.5 °F