Live Weather & Forecast
Weather in Alton
New Hampshire, United States · Real-time conditions & 3-day outlook
5°C
Feels like 2°C
41°F / Feels 36°F
Light rain
Alton, New Hampshire
🌙 Nighttime
Updated: 2026-04-13 05:30
Humidity
89%
Wind
13 km/h SSW
Wind Gust
19.2 km/h
Pressure
1020 mb
Visibility
16 km
UV Index
0
(Low)
Precipitation
0.09 mm
Cloud Cover
75%
Dew Point
2.8°C
Wind Degree
195°
Air Quality Index
US EPA: Good
UK DEFRA: Low (1)
CO
172.9 μg/m³
NO₂
6 μg/m³
O₃
91 μg/m³
SO₂
2.8 μg/m³
PM 2.5
4.8 μg/m³
PM 10
5.4 μg/m³
Today's Hourly Forecast
24-hour breakdown for Alton, New Hampshire
12 AM
6°
Patchy rain nearby
1 AM
6°
Patchy rain nearby
2 AM
5°
Patchy rain nearby
3 AM
5°
Patchy rain nearby
4 AM
5°
Patchy rain nearby
5 AM
5°
Light rain
6 AM
6°
Patchy rain nearby
7 AM
7°
Patchy rain nearby
8 AM
8°
Patchy rain nearby
9 AM
10°
Sunny
10 AM
14°
Sunny
11 AM
17°
Sunny
12 PM
20°
Sunny
1 PM
20°
Sunny
2 PM
21°
Sunny
3 PM
20°
Patchy rain nearby
4 PM
18°
Light drizzle
5 PM
18°
Light drizzle
6 PM
18°
Patchy rain nearby
7 PM
16°
Cloudy
8 PM
17°
Cloudy
9 PM
17°
Cloudy
10 PM
16°
Cloudy
11 PM
16°
Clear
3-Day Forecast
Daily overview for Alton, New Hampshire
Today
Patchy rain nearby
22°
/
5°
🌧️ 85% chance of rain
💧 Avg. humidity: 76%
💨 Max wind: 22 km/h
🌧️ Total precip: 1.91 mm
☀️ UV Index: 0.8
🌅 Sunrise: 06:05 AM
🌇 Sunset: 07:26 PM
🌙 Waning Crescent
🌑 Moon: 23% lit
Tue, Apr 14
Partly Cloudy
22°
/
13°
🌧️ 0% chance of rain
💧 Avg. humidity: 74%
💨 Max wind: 18.4 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.4
🌅 Sunrise: 06:04 AM
🌇 Sunset: 07:28 PM
🌙 Waning Crescent
🌑 Moon: 15% lit
Wed, Apr 15
Moderate rain
17°
/
10°
🌧️ 85% chance of rain
💧 Avg. humidity: 87%
💨 Max wind: 11.5 km/h
🌧️ Total precip: 12.03 mm
☀️ UV Index: 0.9
🌅 Sunrise: 06:02 AM
🌇 Sunset: 07:29 PM
🌙 Waning Crescent
🌑 Moon: 8% lit
Best Time to Visit Alton
Plan your trip to Alton, United States around the most favorable weather conditions.
Peak Season
June – September
Warm, dry summers — ideal for outdoor activities.
Shoulder Season
April – May, October
Fewer crowds, moderate prices, mild weather.
Off Season
November – March
Cooler temperatures; some regions may experience rain or snow.
Frequently Asked Questions
What is the current weather in Alton?
Current conditions in Alton: Light rain, temperature 5°C, humidity 89%.
What is the best time to visit Alton?
The best time to visit Alton is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Alton?
Alton is located at approximately 43.5° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Alton?
The wettest period in Alton is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Alton?
For visits to Alton during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is Alton in?
Alton is located in United States, in the state of New Hampshire.
What are the public holidays in Alton in 2026?
View the 2026 public holidays for Alton on our Holidays page.
What are the GPS coordinates used for the weather forecast in Alton?
The weather forecast for Alton uses coordinates 43.4564, -71.2213.