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:
23°C
73.4°F
°C °F

Condition: Clear Sky

Pressure: 1,008 hPa

Feel like: 20 °C

Temperature: 23°C

Cloud: 18%

Humidity: 31%

Wind: NNW - 9 km/h

Visibility: 33.56 km

Weather forecast

Sat
08 Aug
15°C / 29°C
Overcast
Sun
09 Aug
17°C / 25°C
Overcast
Mon
10 Aug
15°C / 24°C
Partly Cloudy
Tue
11 Aug
15°C / 28°C
Clear Sky
Wed
12 Aug
18°C / 30°C
Mainly Clear
Hourly forecast today:
18:00 PM
5° / 23°
5° / 23°
Clear Sky
31% 19 km/h
19:00 PM
5° / 21°
5° / 21°
Clear Sky
35% 18 km/h
20:00 PM
4° / 18°
4° / 18°
Clear Sky
41% 19 km/h
21:00 PM
6° / 18°
6° / 18°
Clear Sky
45% 20 km/h
22:00 PM
6° / 16°
6° / 16°
Clear Sky
53% 16 km/h
23:00 PM
9° / 14°
9° / 14°
Clear Sky
72% 14 km/h
00:00 AM
9° / 12°
9° / 12°
Clear Sky
82% 10 km/h
01:00 AM
9° / 12°
9° / 12°
Clear Sky
84% 11 km/h
02:00 AM
10° / 14°
10° / 14°
Clear Sky
77% 21 km/h
03:00 AM
9° / 12°
9° / 12°
Clear Sky
78% 17 km/h
04:00 AM
7° / 10°
7° / 10°
Clear Sky
84% 10 km/h

30 Day Averages and Extremes

  • Average high 23.47°C
  • Average low 12.93°C
  • Hottest day 33°C (28 July 2026)
  • Coldest day 0°C (20 August 2026)
  • Average humidity 55.27%
  • Days with precipitation 13 days
  • Highest precipitation 23 mm (16 August 2026)

Yesterday's Data

  • Max: 23°C
  • Min: 9°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 very hot weather in Hertfordshire, with the high temperatures above 27ºC (80.6ºF), consider wearing:
- Loose and airy fabrics like linen or cotton
- UV-protective sunglasses
- Sunscreen for skin protection
- Thin, moisture-wicking socks

Temperature

Early
6°C / 9°C
Morning
6°C / 19°C
Afternoon
5°C / 23°C
Evening
6°C / 18°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 435
  • CO 136
  • NH3 2
  • NO2 4
  • O3 98
  • PM10 7
  • PM25 4
  • SO2 0
  • CH4 1,370

Sunrise / Sunset

04:35
19:38