Our Proprietary 10-Day Forecast

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Current warnings over Thornton, New Hampshire
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<p>Warnings from F5Weather</a></div>

United States weather warnings are issued by various organizations under NOAA. Most from the National Weather Service, but also Storm Prediction Center and National Hurricane Center.

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Current radar over Thornton, New Hampshire red dot
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<p>Live radar from F5Weather</a></div>

Our radar is based off of US NEXRAD and Canadian weather radar sites through the quality controlled MRMS system. It compiles various sources for radar data and filters out erroneous returns such as sun spikes and ground clutter. We then colorize the precipitation based on our methods for determining precipitation type. Rain is in shades of green, mixed precipitation and freezing rain in shades of pink and snow is in shades of blue.

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Current satellite over Thornton, New Hampshire red dot
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<p>Live satellite from F5Weather</a></div>

Our satellite is from the GOES-16. It is color enhanced by using a geocolor terrain background during the day and black marble city lights at night. The daytime satellite data is Visible satellite imagery, and nighttime uses Infrared bands. The bluish clouds are fog and low cloud. The whiteest clouds are the coldest, highest cloud tops.

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Current surface weather map around Grafton County, NH

This surface map is from the HRRR computer model. It is a 1-hour forecast, updated hourly, which is a good estimate of the current surface conditions. This map shows the current high and low pressure centers, pressure isobar contours, wind streamlines and thickness contours. It also shows the currently depicted preciptiation estimates, although this should not be a substitute for actual live radar. The purple dashed contour is the 5400m thickness line, which is often a good proxy for the rain/snow line.

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Temperatures right now near Thornton, New Hampshire

This is the latest surface temperatures as depicted by the HRRR computer model, updated hourly. Although these are not actual observations, this model is a very good representation of current conditions as it factors in observations, terrain and physics to give you more detailed temperatures in areas that do not have reporting weather stations. For the latest reports at specific locations, like in Thornton, NH please see our current conditions data on the left and right side of this page, or go to our current conditions page.

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Surface wind speed map over Thornton, NH

This map shows the latest HRRR computer model winds. This depiction of the current wind directions and speeds is an estimate from the computer model. For actual observations in Thornton, NH, see the current conditions data on the left and right side of this page, or go to our current conditions page.

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Regional 24 hour rainfall expected near Thornton, New Hampshire

This is a forecast of the amount of precipitation expected over the next 24 hours from the HRRR weather forecast model. This is only one forecast depiction, and you should check other models to get a better idea of what may happen. You can view this and other models in more detail on our main weather forecast maps page. There, you will also be able to look at forecasts beyond just 24 hours and look at forecasts out to as far as 16 days.

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Area snowfall accumulation expected around Grafton County, New Hampshire

This is snowfall forecast, with amounts anticipated in the next 24 hours. This guidance is from the HRRR weather model. For more model forecasts out to 16 days, visit our main weather forecast maps page.

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These are Convective Outlooks from the Storm Prediction Center. Click to see Days 1-3 broken down into Tornado, Wind and Hail threats, as well as days 5-8 outlooks.

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Atlantic Hurricane and Tropical Storm Tracking Map
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<p>Hurricane Tracking from F5Weather</a></div>

Our hurricane tracking map monitors for any current or forecast tropical disturbances in the Atlantic. (See our Pacific Hurricane Tracker) Various hurricane models will draw a 'spaghetti plot' in the Atlantic Basin when a disturbance is forecast or exists, showing the system's forecast track. Once a storm has developed, the National Hurricane Center will forecast their official track. This will show up on the map along with the storm's current intensity, track and name. We will also plot some of the storm's vitals and of course the spaghetti plots from the models along with the NHC forecast track will give you an idea of where it's heading, and its forecast intensity with time.

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To view the latest computer models, visit f5wx.com for access to the weather maps and guidance that meteorologists use to make their forecasts.
 
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View Skew-T soundings, textual data tables for your location, and of course maps! Weather forecast maps of the basics like temperature, wind, pressure, humidity, dew point, cloud cover, simulated radar, travel weather, rainfall and snow are available. More advanced users can also get use out of our severe weather & tornado threat maps, as well as upper air & shear graphics.
 
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Climate Summary
(made with AI, use with caution)
Thornton, New Hampshire Climate Summary

Location

Grafton County, New Hampshire

Climate Zone

Humid Continental Climate (Dfb)

Average Annual Temperature

44.2°F (6.8°C)

Average Annual Precipitation

42.2 inches (1072 mm)

Average Annual Snowfall

63.4 inches (161 cm)

Temperature

    •   January

Average high: 28°F (-2°C), average low: 12°F (-11°C)

    •   July

Average high: 78°F (26°C), average low: 54°F (12°C)

Precipitation

    •   Wettest month

October (4.6 inches or 117 mm)

    •   Driest month

February (2.2 inches or 56 mm)

Snowfall

    •   Snowiest month

January (16.4 inches or 42 cm)

    •   Least snowy month

July (0 inches or 0 cm)

Other Climate Data

    •   Average annual sunshine

2,150 hours

    •   Average humidity

70%

    •   Growing season

120-150 days

    •   Hardiness zone

5a

Climate Overview

Thornton, New Hampshire experiences a humid continental climate with warm, humid summers and cold, snowy winters. The average annual temperature is 44.2°F (6.8°C), with temperatures ranging from an average low of 12°F (-11°C) in January to an average high of 78°F (26°C) in July.

Precipitation is fairly evenly distributed throughout the year, with an average of 42.2 inches (1072 mm) annually. Snowfall is significant during the winter months, with an average of 63.4 inches (161 cm) per year.

The growing season in Thornton typically lasts from mid-May to mid-September, providing ample time for gardening and outdoor activities. The hardiness zone is 5a, which means that plants that are hardy to this zone can withstand temperatures as low as -20°F (-29°C).

Facts & Historical Information
(made with AI, use with caution)
Natural History

    •   Thornton is home to the 1,070-acre Thornton Bog, a National Natural Landmark and the largest bog in New England. It supports a diverse array of plant and animal life, including rare orchids and carnivorous plants.

Science

    •   In the 19th century, Thornton was a center for the textile industry. The Pemigewasset River provided power for mills, and the town became known for its production of cotton and woolen goods.

    •   The town is also home to the Mount Washington Observatory, which has been conducting weather research on the summit of Mount Washington since 1932.

Personalities

    •   Daniel Webster, the famous orator and statesman, owned a summer home in Thornton. He wrote some of his most famous speeches while staying there.

    •   Mary Baker Eddy, the founder of the Christian Science movement, also spent time in Thornton. She established a summer colony in the town in the late 19th century.

Tourist Attractions
1.Squam Lakes Natural Science Center

is a 1,100-acre conservation area with hiking trails, a wildlife sanctuary, and a nature museum.

2.Castle in the Clouds

is a historic mansion and estate with stunning views of the White Mountains.

3.White Mountain National Forest

is a vast and beautiful forest with hiking trails, camping areas, and scenic drives.

Nearby Cities:

Woodstock, NH
Rumney, NHPlymouth, NH
Holderness, NHAshland, NH
Sandwich, NHCenter Harbor, NH
Moultonborough, NHBridgewater, NH
Meredith, NHTamworth, NH
Bristol, NHHaverhill, NH
Orford, NHDeerfield, NH
Lyme, NHBoston, MA
South Boston, MAWorcester, MA
Lowell, MACambridge, MA
Manchester, NHQuincy, MA
Lynn, MANewton, MA
Nashua, NHSomerville, MA
Lawrence, MA