Hertfordshire, United Kingdom Weather

  1. Hertfordshire, United Kingdom Weather
  2. Current conditions
  3. Weather forecast
  4. Averages and extremes
  5. Yesterday's Data
  6. Temperature and possibility of rain in Hertfordshire over the next 12 hours
  7. Temperature and possibility of rain in Hertfordshire in the coming days
  8. Rainfall in Hertfordshire in the coming days
  9. Hertfordshire Weather Summary
  10. Weather averages by month
  11. Hertfordshire's weather
  12. Frequently asked questions
  13. Comments
Hertfordshire, Weather
(Photo by Viktor Forgacs on Unsplash)

Current conditions

Updated:
1°C
33.8°F
°C °F

Condition: Fog

Pressure: 1,005 hPa

Feel like: -1 °C

Temperature: 1°C

Cloud: 100%

Humidity: 100%

Wind: NE - 3 km/h

Visibility: 0.06 km

Weather forecast

Tue
10 Nov
3°C / 9°C
Moderate Drizzle
Wed
11 Nov
5°C / 9°C
Drizzle Dense Intensity
Thu
12 Nov
2°C / 7°C
Drizzle
Fri
13 Nov
0°C / 6°C
Clear Sky
Sat
14 Nov
0°C / 6°C
Fog
Hourly forecast today:
03:00 AM
1° / 1°
1° / 1°
Fog
100% 7 km/h
04:00 AM
1° / 1°
1° / 1°
Fog
99% 6 km/h
05:00 AM
1° / 1°
1° / 1°
Fog
100% 9 km/h
06:00 AM
2° / 2°
2° / 2°
Fog
100% 9 km/h
07:00 AM
1° / 1°
1° / 1°
Fog
100% 9 km/h
08:00 AM
4° / 4°
4° / 4°
Fog
100% 9 km/h
09:00 AM
4° / 4°
4° / 4°
Overcast
99% 11 km/h
10:00 AM
5° / 6°
5° / 6°
Overcast
97% 13 km/h
11:00 AM
6° / 6°
6° / 6°
Overcast
96% 12 km/h
12:00 PM
5° / 7°
5° / 7°
Partly Cloudy
88% 12 km/h
13:00 PM
5° / 8°
5° / 8°
Overcast
84% 15 km/h

30 Day Averages and Extremes

  • Average high 9.33°C
  • Average low 3.8°C
  • Hottest day 15°C (26 October 2026)
  • Coldest day 0°C (13 November 2026)
  • Average humidity 82.4%
  • Days with precipitation 17 days
  • Highest precipitation 48 mm (16 November 2026)

Yesterday's Data

  • Max: 9°C
  • Min: 2°C
  • Total Precipitation: 0 mm

Temperature and possibility of rain in Hertfordshire over the next 12 hours

Temperature and possibility of rain in Hertfordshire in the coming days

Rainfall in Hertfordshire in the coming days

Hertfordshire Climate Summary

Hertfordshire features a Marine west coast, warm summer (Köppen classification: Cfb), with an average annual temperature of 11.29ºC (52.32ºF), which is about 0.54% higher than the national average for United Kingdom. Annually, the city experiences approximately 41.36 millimeters (1.63 inches) of rainfall, spread across 115.11 rainy days, accounting for 31.54% of the year.

Longitude 51.8097823
Latitude -0.2376744
Yearly high temperature 13.7ºC (56.66ºF)
Yearly low temperature 6.9ºC (44.42ºF)
Hottest month July 21.6ºC (70.88ºF)
Coldest month December 2.99ºC (37.38ºF)
Yearly precip 41.36mm (1.63in)
Days with rainfall 115.11 days (31.54%)
Driest month March (82.39%)
Wettest month June (81.55%)

Weather averages by month

Month High / Low (°C) Rain
January 6.18° / 1.75° 9.64 days
February 7.14° / 2.01° 8.82 days
March 10.09° / 3.04° 7.55 days
April 13.46° / 4.8° 8.91 days
May 15.92° / 7.22° 10.18 days
June 18.87° / 10.19° 11.91 days
July 21.6° / 12.73° 11.73 days
August 21.14° / 13.33° 11.82 days
September 18.66° / 10.99° 6.18 days
October 14.43° / 8.57° 10.0 days
November 9.78° / 5.15° 8.82 days
December 7.16° / 2.99° 9.55 days

Hertfordshire's weather

Frequently asked questions

1. What is the hottest month in Hertfordshire?

July has the highest average monthly temperature (daily mean of 21.6ºC) and December are the coolest (daily mean of 2.99ºC).

2. What should I wear in Hertfordshire today?

For today's cold weather in Hertfordshire, with temperatures ranging from 6ºC to 9ºC (42.8ºF to 48.2ºF), you should wear:
- Wool or thermal socks
- Closed-toe shoes or boots
- Scarf to protect the neck area
- Layered clothing (such as a thermal shirt under a sweater)

Temperature

Early
1°C / 1°C
Morning
4°C / 4°C
Afternoon
5°C / 8°C
Evening
3°C / 4°C

Air quality

Moderate

Acceptable air quality, some pollutants present, minor health concerns for sensitive individuals

  • CO2 485
  • CO 359
  • NH3 1
  • NO2 53
  • O3 1
  • PM10 33
  • PM25 32
  • SO2 1
  • CH4 1,610

Sunrise / Sunset

07:09
16:19