Barometric Pressure in Topsham, United States 
1029.5 hPa
6.5 ℃
60%
2.18 m/s
Get Alerts 🚨. Sign up to receive alerts when the barometric pressure changes significantly.
The average pressure in Topsham, Maine, United States today is , which is higher than normal. Pressure is trending falling.
Weather prediction: Rain at times, worse later
Rapid Pressure Changes
Rapid pressure changes detected in Topsham, often a sign of approaching weather shifts. See the forecast chart or get pressure alerts.
- Rapid Fall : ()
- Rapid Rise : ()
The daily total fluctuation in pressure in Topsham is , with a low of and a high of .
Forecast
Hourly Pressure Trends
Track the barometric pressure in Topsham hour by hour across the next 6 hourly readings.
Topsham, Maine, lies beside the Androscoggin River, a short distance from the Gulf of Maine. Storms moving up the coast or across New England often bring changing winds and rain or snow. Falling air pressure often comes with unsettled weather; rising pressure usually brings calmer, clearer periods.
The nearby ocean supplies moisture and can soften temperature swings, while inland areas heat and cool faster. Coastal storms can grow into nor’easters, bringing strong winds and heavy precipitation. The river valley and low hills shape local breezes but do not block larger weather systems.
Winters are cold, with snow, icy stretches, and occasional rain when milder ocean air reaches inland. Spring warms slowly and often stays damp. Summers are warm and humid, with showers and thunderstorms. Autumn turns cooler and drier, though coastal storms can still bring windy, soaking rain.