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:
17°C
62.6°F
°C °F

Condition: Clear Sky

Pressure: 1,013 hPa

Feel like: 18 °C

Temperature: 17°C

Cloud: 0%

Humidity: 90%

Wind: E - 7 km/h

Visibility: 21.04 km

Weather forecast

Tue
23 Jun
21°C / 31°C
Slight Thunderstorm
Wed
24 Jun
20°C / 30°C
Slight Thunderstorm
Thu
25 Jun
21°C / 25°C
Drizzle
Fri
26 Jun
19°C / 26°C
Moderate Drizzle
Sat
27 Jun
16°C / 25°C
Overcast
Hourly forecast today:
00:00 AM
15° / 17°
15° / 17°
Clear Sky
90% 15 km/h
01:00 AM
15° / 16°
15° / 16°
Overcast
92% 13 km/h
02:00 AM
15° / 16°
15° / 16°
Overcast
94% 12 km/h
03:00 AM
14° / 15°
14° / 15°
Clear Sky
94% 13 km/h
04:00 AM
14° / 15°
14° / 15°
Clear Sky
93% 15 km/h
05:00 AM
14° / 16°
14° / 16°
Clear Sky
89% 16 km/h
06:00 AM
15° / 18°
15° / 18°
Clear Sky
85% 18 km/h
07:00 AM
16° / 19°
16° / 19°
Clear Sky
81% 23 km/h
08:00 AM
17° / 21°
17° / 21°
Clear Sky
75% 27 km/h
09:00 AM
17° / 23°
17° / 23°
Clear Sky
70% 26 km/h
10:00 AM
17° / 25°
17° / 25°
Clear Sky
63% 28 km/h

30 Day Averages and Extremes

  • Average high 20.6°C
  • Average low 12.77°C
  • Hottest day 32°C (22 June 2026)
  • Coldest day 0°C (04 July 2026)
  • Average humidity 68.47%
  • Days with precipitation 21 days
  • Highest precipitation 66 mm (07 June 2026)

Yesterday's Data

  • Max: 28°C
  • Min: 15°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 32ºC (89.6ºF), consider wearing:
- Light, natural fabrics (like cotton or linen)
- High SPF sunscreen for outdoor activities
- Broad-brimmed sun hat
- Sleeveless tops or vests

Temperature

Early
14°C / 15°C
Morning
17°C / 23°C
Afternoon
17°C / 28°C
Evening
15°C / 21°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 448
  • CO 123
  • NH3 1
  • NO2 9
  • O3 50
  • PM10 13
  • PM25 10
  • SO2 0
  • CH4 1,412

Sunrise / Sunset

03:42
20:23