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Now · 11:36 PM

Great Amwell Weather & Hourly Forecast

United Kingdom · England · SG12 9BE

Overcast night
14°C
Overcast night
Feels like: 12°C
💧 Humidity 81% 🌡 Pressure 1016 hPa 💨 Wind 11 km/h 👁 Visibility 34.6 km Clouds 100% ☀️ UV index 1.0 · Low 🌅 Sunrise 🌇 Sunset

Hourly Forecast for Great Amwell

Tomorrow
Overcast night · 12:00 AM Overcast night
14° 💧 None 💨 11 km/h H 81%1016 hPa
Mostly clear night · 3:00 AM Mostly clear night
13° 💧 None 💨 16 km/h H 81%1014 hPa
Overcast night · 6:00 AM Overcast night
13° 💧 0.4 mm 💨 18 km/h H 83%1012 hPa
Overcast · 9:00 AM Overcast
14° 💧 0.1 mm 💨 20 km/h H 85%1010 hPa
Light rain · 12:00 PM Light rain
17° 💧 0.3 mm 💨 17 km/h H 77%1009 hPa
Mostly cloudy · 3:00 PM Mostly cloudy
20° 💧 None 💨 20 km/h H 45%1009 hPa
Mostly cloudy · 6:00 PM Mostly cloudy
18° 💧 None 💨 15 km/h H 50%1009 hPa
Clear night · 9:00 PM Clear night
14° 💧 None 💨 12 km/h H 65%1011 hPa
Friday
Clear night · 12:00 AM Clear night
12° 💧 None 💨 12 km/h H 77%1012 hPa
Clear night · 3:00 AM Clear night
11° 💧 None 💨 12 km/h H 90%1012 hPa
Clear night · 6:00 AM Clear night
10° 💧 None 💨 12 km/h H 94%1013 hPa
Mostly cloudy · 9:00 AM Mostly cloudy
13° 💧 None 💨 12 km/h H 81%1014 hPa
Mostly cloudy · 12:00 PM Mostly cloudy
17° 💧 None 💨 17 km/h H 54%1014 hPa
Overcast · 3:00 PM Overcast
20° 💧 None 💨 21 km/h H 45%1013 hPa
Overcast · 6:00 PM Overcast
17° 💧 0.0 mm 💨 22 km/h H 63%1013 hPa
Overcast night · 9:00 PM Overcast night
16° 💧 0.9 mm 💨 20 km/h H 72%1014 hPa

In Great Amwell and, more broadly, across East of England: This evening, skies will be mostly cloudy, with mild temperatures ranging from 13 to 19 degrees Celsius. There is a possibility of light rain, with total accumulations around 3 mm, and the likelihood of rain reaching up to 54%. Winds are expected to be moderate from the southwest, reaching speeds of up to 13 mph, with gusts possibly reaching 26 mph. The breeze may make the evening feel a little cooler, especially during any rain showers. Overall, it’s a relatively mild night, but some light rain and breezy conditions are likely to persist through the next few hours.

15-Day Weather Outlook for Great Amwell

TomorrowTomorrow Overcast Overcast 20°/12° 💧 None 💨 20 km/h
Friday, Sep 18Fri Sep 18 Partly cloudy Partly cloudy 20°/10° 💧 None 💨 25 km/h
Saturday, Sep 19Sat Sep 19 Light rain Light rain 20°/15° 💧 3.8 mm 💨 24 km/h
Sunday, Sep 20Sun Sep 20 Overcast Overcast 18°/13° 💧 0.3 mm 💨 20 km/h
Monday, Sep 21Mon Sep 21 Partly cloudy Partly cloudy 19°/ 💧 None 💨 7 km/h
Tuesday, Sep 22Tue Sep 22 Overcast Overcast 19°/12° 💧 None 💨 5 km/h
Wednesday, Sep 23Wed Sep 23 Overcast Overcast 21°/15° 💧 0.1 mm 💨 11 km/h
Thursday, Sep 24Thu Sep 24 Mostly sunny Mostly sunny 21°/12° 💧 None 💨 12 km/h
Friday, Sep 25Fri Sep 25 Mostly cloudy Mostly cloudy 22°/11° 💧 None 💨 11 km/h
Saturday, Sep 26Sat Sep 26 Sunny Sunny 23°/10° 💧 None 💨 11 km/h
Sunday, Sep 27Sun Sep 27 Overcast Overcast 23°/11° 💧 None 💨 11 km/h
Monday, Sep 28Mon Sep 28 Overcast Overcast 16°/12° 💧 0.8 mm 💨 18 km/h
Tuesday, Sep 29Tue Sep 29 Sunny Sunny 17°/ 💧 None 💨 14 km/h
Wednesday, Sep 30Wed Sep 30 Mostly cloudy Mostly cloudy 17°/ 💧 None 💨 9 km/h
Thursday, Oct 1Thu Oct 1 Partly cloudy Partly cloudy 19°/ 💧 None 💨 6 km/h

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Great Amwell

Vertical axis: °C · Color based on temperature
Overcast night at 12:00 AM
14° Tomorrow 12:00 AM
Overcast night at 1:00 AM
14° 1:00 AM
Mostly cloudy night at 2:00 AM
13° 2:00 AM
Mostly clear night at 3:00 AM
13° 3:00 AM
Mostly cloudy night at 4:00 AM
12° Tomorrow 4:00 AM
Mostly cloudy night at 5:00 AM
13° 5:00 AM
Overcast night at 6:00 AM
13° 6:00 AM
Overcast at 7:00 AM
13° 7:00 AM
Light rain at 8:00 AM
13° Tomorrow 8:00 AM
Overcast at 9:00 AM
14° 9:00 AM
Overcast at 10:00 AM
15° 10:00 AM
Mostly cloudy at 11:00 AM
16° 11:00 AM
Light rain at 12:00 PM
17° Tomorrow 12:00 PM
Light rain at 1:00 PM
19° 1:00 PM
Partly cloudy at 2:00 PM
20° 2:00 PM
Mostly cloudy at 3:00 PM
20° 3:00 PM
Overcast at 4:00 PM
19° Tomorrow 4:00 PM
Mostly cloudy at 5:00 PM
19° 5:00 PM
Mostly cloudy at 6:00 PM
18° 6:00 PM
Sunny at 7:00 PM
16° 7:00 PM
Clear night at 8:00 PM
15° Tomorrow 8:00 PM
Clear night at 9:00 PM
14° 9:00 PM
Partly cloudy night at 10:00 PM
13° 10:00 PM
Clear night at 11:00 PM
13° 11:00 PM
Clear night at 12:00 AM
12° Friday 12:00 AM
Clear night at 1:00 AM
12° 1:00 AM
Clear night at 2:00 AM
11° 2:00 AM
Clear night at 3:00 AM
11° 3:00 AM
Clear night at 4:00 AM
11° Friday 4:00 AM
Clear night at 5:00 AM
11° 5:00 AM
Clear night at 6:00 AM
10° 6:00 AM
Sunny at 7:00 AM
10° 7:00 AM
Partly cloudy at 8:00 AM
11° Friday 8:00 AM
Mostly cloudy at 9:00 AM
13° 9:00 AM
Mostly cloudy at 10:00 AM
15° 10:00 AM
Mostly cloudy at 11:00 AM
16° 11:00 AM
Mostly cloudy at 12:00 PM
17° Friday 12:00 PM
Mostly cloudy at 1:00 PM
18° 1:00 PM
Overcast at 2:00 PM
19° 2:00 PM
Overcast at 3:00 PM
20° 3:00 PM
Overcast at 4:00 PM
20° Friday 4:00 PM
Overcast at 5:00 PM
18° 5:00 PM
Overcast at 6:00 PM
17° 6:00 PM
Overcast at 7:00 PM
16° 7:00 PM
Mostly cloudy night at 8:00 PM
16° Friday 8:00 PM
Overcast night at 9:00 PM
16° 9:00 PM
Overcast night at 10:00 PM
15° 10:00 PM
Light rain at 11:00 PM
15° 11:00 PM
Overcast night at 12:00 AM
15° Saturday 12:00 AM
Overcast night at 1:00 AM
15° 1:00 AM
Overcast night at 2:00 AM
16° 2:00 AM
Mostly cloudy night at 3:00 AM
16° 3:00 AM
Overcast night at 4:00 AM
16° Saturday 4:00 AM
Mostly cloudy night at 5:00 AM
16° 5:00 AM
Light rain at 6:00 AM
15° 6:00 AM
Mostly cloudy at 7:00 AM
15° 7:00 AM
Mostly cloudy at 8:00 AM
16° Saturday 8:00 AM
Overcast at 9:00 AM
17° 9:00 AM
Overcast at 10:00 AM
18° 10:00 AM
Overcast at 11:00 AM
18° 11:00 AM
Overcast at 12:00 PM
18° Saturday 12:00 PM
Overcast at 1:00 PM
19° 1:00 PM
Overcast at 4:00 PM
20° 4:00 PM
Overcast at 7:00 PM
19° 7:00 PM
Overcast night at 10:00 PM
18° Saturday 10:00 PM
Overcast night at 1:00 AM
18° 1:00 AM
Overcast night at 4:00 AM
17° 4:00 AM
Mostly cloudy at 7:00 AM
15° 7:00 AM
Mostly cloudy at 10:00 AM
16° Sunday 10:00 AM
Overcast at 1:00 PM
18° 1:00 PM
Mostly sunny at 4:00 PM
18° 4:00 PM
Sunny at 7:00 PM
16° 7:00 PM
Mostly clear night at 10:00 PM
13° Sunday 10:00 PM
Partly cloudy night at 1:00 AM
11° 1:00 AM
Clear night at 4:00 AM
4:00 AM
Sunny at 7:00 AM
7:00 AM
Sunny at 10:00 AM
15° Monday 10:00 AM
Sunny at 1:00 PM
18° 1:00 PM
Sunny at 4:00 PM
19° 4:00 PM
Sunny at 7:00 PM
16° 7:00 PM
Clear night at 10:00 PM
14° Monday 10:00 PM
Clear night at 1:00 AM
13° 1:00 AM
Overcast night at 4:00 AM
12° 4:00 AM
Overcast at 7:00 AM
13° 7:00 AM
Overcast at 10:00 AM
17° Tuesday 10:00 AM
Overcast at 1:00 PM
19° 1:00 PM
Mostly cloudy at 7:00 PM
18° 7:00 PM
Overcast night at 1:00 AM
17° 1:00 AM
Mostly cloudy at 7:00 AM
15° Wednesday 7:00 AM
Overcast at 1:00 PM
21° 1:00 PM
Overcast night at 7:00 PM
18° 7:00 PM
Clear night at 1:00 AM
14° 1:00 AM
Mostly sunny at 7:00 AM
12° Thursday 7:00 AM
Partly cloudy at 1:00 PM
21° 1:00 PM
Partly cloudy night at 7:00 PM
18° 7:00 PM
Mostly cloudy night at 1:00 AM
13° 1:00 AM
Mostly cloudy at 7:00 AM
11° Friday 7:00 AM
Partly cloudy at 1:00 PM
22° 1:00 PM
Clear night at 7:00 PM
19° 7:00 PM
Clear night at 1:00 AM
12° 1:00 AM
Sunny at 7:00 AM
10° Saturday 7:00 AM
Sunny at 1:00 PM
23° 1:00 PM
Clear night at 7:00 PM
18° 7:00 PM
Clear night at 1:00 AM
13° 1:00 AM
Sunny at 7:00 AM
11° Sunday 7:00 AM
Overcast at 1:00 PM
23° 1:00 PM
Overcast night at 7:00 PM
20° 7:00 PM
Overcast night at 1:00 AM
15° 1:00 AM
Overcast at 7:00 AM
12° Monday 7:00 AM
Overcast at 1:00 PM
16° 1:00 PM
Mostly clear night at 7:00 PM
13° 7:00 PM
Clear night at 1:00 AM
1:00 AM
Sunny at 7:00 AM
Tuesday 7:00 AM
Sunny at 1:00 PM
17° 1:00 PM
Clear night at 7:00 PM
14° 7:00 PM
Clear night at 1:00 AM
10° 1:00 AM
Mostly cloudy at 7:00 AM
Wednesday 7:00 AM
Mostly cloudy at 1:00 PM
17° 1:00 PM
Overcast night at 7:00 PM
14° 7:00 PM
Partly cloudy night at 1:00 AM
10° 1:00 AM
Sunny at 7:00 AM
Thursday 7:00 AM
Sunny at 1:00 PM
19° 1:00 PM

AIR QUALITY FORECAST

Air Quality Forecast for Great Amwell

Hourly forecast · Updated every 2 hours
Fair
Nearest forecast value 12:00 AM
PM2.5 Fine particles Good 1,1µg/m³

Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.

PM10 Particulate matter Good 2,5µg/m³

Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.

O₃ Ozone Fair 70,2µg/m³

Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.

NO₂ Nitrogen dioxide Good 4,8µg/m³

A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.

Air quality is acceptable for most people.

UV & HEALTH

UV, Sun & Health Outlook in Great Amwell

Maximum daily UV Today, tomorrow and the following day show the maximum UV index forecast for each day.
0–2 Low 3–5 Moderate 6–7 High 8–10 Very high 11+ Extreme
Today UV 5,0Moderate Unavailable
Tomorrow UV 5,0Moderate 🙂Fair
Friday UV 4,0Moderate 🙂Fair
Saturday UV 4,0Moderate 🙂Fair
Sunday UV 5,0Moderate 🙂Fair
Monday UV 6,0High Unavailable
Tuesday UV 5,0Moderate Unavailable
Today's weather health advice Open today's recommendations.

Moderate UV risk

Sunglasses and sun protection are recommended for prolonged exposure.

Acceptable air quality

Air quality is acceptable for most people. Very sensitive people may want to reduce prolonged exertion.

Comfortable temperature conditions

Temperatures should feel comfortable for most people, with no particular heat or cold precautions needed.

Good conditions for outdoor activities

Outdoor activities can generally be enjoyed normally, with sun protection adjusted to the UV level.

WIND OUTLOOK

Hourly Wind Forecast for Great Amwell

Vertical axis: km/h · Horizontal axis: hours
Hourly wind speed Chart of sustained wind and maximum gusts in km/h. Tomorrow 12:00 AM 1:00 AM 2:00 AM 3:00 AM Tomorrow 4:00 AM 5:00 AM 6:00 AM 7:00 AM Tomorrow 8:00 AM 9:00 AM 10:00 AM 11:00 AM Tomorrow 12:00 PM 1:00 PM 2:00 PM 3:00 PM Tomorrow 4:00 PM 5:00 PM 6:00 PM 7:00 PM Tomorrow 8:00 PM 9:00 PM 10:00 PM 11:00 PM Friday 12:00 AM 1:00 AM 2:00 AM 3:00 AM Friday 4:00 AM 5:00 AM 6:00 AM 7:00 AM Friday 8:00 AM 9:00 AM 10:00 AM 11:00 AM Friday 12:00 PM 1:00 PM 2:00 PM 3:00 PM Friday 4:00 PM 5:00 PM 6:00 PM 7:00 PM Friday 8:00 PM 9:00 PM 10:00 PM 11:00 PM Saturday 12:00 AM 1:00 AM 2:00 AM 3:00 AM Saturday 4:00 AM 5:00 AM 6:00 AM 7:00 AM Saturday 8:00 AM 9:00 AM 10:00 AM 11:00 AM Saturday 12:00 PM 1:00 PM 4:00 PM 7:00 PM Saturday 10:00 PM 1:00 AM 4:00 AM 7:00 AM Sunday 10:00 AM 1:00 PM 4:00 PM 7:00 PM Sunday 10:00 PM 1:00 AM 4:00 AM 7:00 AM Monday 10:00 AM 1:00 PM 4:00 PM 7:00 PM Monday 10:00 PM 1:00 AM 4:00 AM 7:00 AM Tuesday 10:00 AM 1:00 PM 7:00 PM 1:00 AM Wednesday 7:00 AM 1:00 PM 7:00 PM 1:00 AM Thursday 7:00 AM 1:00 PM 7:00 PM 1:00 AM Friday 7:00 AM 1:00 PM 7:00 PM 1:00 AM Saturday 7:00 AM 1:00 PM 7:00 PM 1:00 AM Sunday 7:00 AM 1:00 PM 7:00 PM 1:00 AM Monday 7:00 AM 1:00 PM 7:00 PM 1:00 AM Tuesday 7:00 AM 1:00 PM 7:00 PM 1:00 AM Wednesday 7:00 AM 1:00 PM 7:00 PM 1:00 AM Thursday 7:00 AM 1:00 PM
Sustained wind Max gusts
NIGHT SKY · GREAT AMWELL, ENGLAND

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 3:00 AM–4:00 AM.

91/100Best-hour score
BEST TIME TONIGHT 3:00 AM–4:00 AM Astronomical darkness: 9:10 PM–4:41 AM
Cloud cover 13% Real hourly forecast for the best viewing hour.
Moonlight 28% Waxing Crescent · Moon below the horizon at the best viewing hour.
Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 71° high at the best hour.
Estimated visible meteors 2–4/hour Local estimate after weather, moonlight and radiant-height adjustments.
Chance ≥1 meteor in 30 min76%
UPCOMING METEOR PERIODSStart, peak and end dates · weather should be checked closer to the peak.
SEP 5–SEP 21
September ε-PerseidsStart SEP 5 · Peak SEP 9 · End SEP 21 · ZHR 8 · 6% Moon at peak
ACTIVE NOW
SEP 20–NOV 20
Southern TauridsStart SEP 20 · Peak NOV 5 · End NOV 20 · ZHR 7 · 20% Moon at peak
UPCOMING
OCT 2–NOV 7
OrionidsStart OCT 2 · Peak OCT 21 · End NOV 7 · ZHR 20 · 77% Moon at peak
UPCOMING
OCT 20–DEC 10
Northern TauridsStart OCT 20 · Peak NOV 12 · End DEC 10 · ZHR 5 · 7% Moon at peak
UPCOMING

Experimental local observing estimate. Weather values come from the hourly forecast already used on this page. Moon position and astronomical darkness are calculated locally from time and coordinates. Meteor-shower ZHR describes ideal conditions and is not the number of meteors a person should expect to see locally.

Forecast data for Great Amwell were last refreshed today at 11:36 PM. The current forecast period extends through 18/09/2026 at 9:00 PM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.