Westborough Weather Forecast
- 50
- 81
Mostly Cloudy
- 50
- 63
Partly Sunny
- 52
- 65
Partly Sunny
- 55
- 68
Mostly Cloudy
- 54
- 67
Chance Rain
- 52
- 66
Chance Rain
- 50
- 63
Mostly Sunny
Today 5 Apr San Francisco Bay Shoreline
Partly cloudy. Highs in the 80s. Northwest Winds 5 to 10 Mph.
Tonight 5 Apr San Francisco Bay Shoreline
Mostly cloudy in the evening then becoming partly cloudy. Lows in the lower 50s. Northwest Winds 5 to 10 Mph.
Westborough Temperature Statistics
April Temperature
San Francisco, San Francisco International Airport (5 miles)
Lowest 3 April, 2026
46.9 °FAverage April
58.3 °FHighest 3 April, 2026
72 °F
Climate (2021–Present)
San Francisco, San Francisco International Airport (5 miles)
Average Low 2021–2026
52.5 °FAverage 2021–2026
58.5 °FAverage High 2021–2026
66.7 °F