Barometric Pressure in Thornton, United States 
1012.3 hPa
12.6 ℃
85%
2 m/s
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The average pressure in Thornton, New Hampshire, United States today is , which is considered normal. Pressure is trending falling.
Weather prediction: Rain at frequent intervals
Rapid Pressure Changes
Rapid pressure changes detected in Thornton, 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 Thornton is , with a low of and a high of .
Forecast
Hourly Pressure Trends
Track the barometric pressure in Thornton hour by hour across the next 6 hourly readings.
Thornton, in the Pemigewasset valley, often gets changeable weather as storms cross northern New Hampshire. Falling air pressure usually comes before clouds, rain, or snow; rising pressure often follows, bringing clearing skies. Mountains can make showers heavier nearby and cause conditions to vary over short distances.
Winter is long and cold, with frequent snow from passing systems and extra snowfall when moist air is lifted over nearby high ground. Cold, dense air can collect in the valley overnight, while exposed slopes and ridges feel stronger winds. Thaws can briefly turn snow to slush.
Spring brings quick shifts between chilly, wet days and milder spells as snow melts in the hills. Summers are mild to warm, but valley humidity can build, and afternoon showers or thunderstorms may form. Autumn cools quickly; clear nights and fall color mark a brief stretch before snow returns.