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:
10°C
50.0°F
°C °F

Condition: Clear Sky

Pressure: 998 hPa

Feel like: 8 °C

Temperature: 10°C

Cloud: 0%

Humidity: 88%

Wind: WSW - 9 km/h

Visibility: 28.44 km

Weather forecast

Sat
19 Sep
15°C / 18°C
Moderate Drizzle
Sun
20 Sep
16°C / 22°C
Overcast
Mon
21 Sep
15°C / 20°C
Overcast
Tue
22 Sep
12°C / 20°C
Overcast
Wed
23 Sep
11°C / 21°C
Partly Cloudy
Hourly forecast today:
02:00 AM
8° / 10°
8° / 10°
Clear Sky
88% 18 km/h
03:00 AM
8° / 9°
8° / 9°
Clear Sky
89% 18 km/h
04:00 AM
8° / 9°
8° / 9°
Clear Sky
90% 18 km/h
05:00 AM
7° / 9°
7° / 9°
Clear Sky
90% 18 km/h
06:00 AM
7° / 9°
7° / 9°
Clear Sky
91% 16 km/h
07:00 AM
7° / 10°
7° / 10°
Mainly Clear
82% 21 km/h
08:00 AM
8° / 12°
8° / 12°
Mainly Clear
74% 23 km/h
09:00 AM
8° / 14°
8° / 14°
Mainly Clear
65% 28 km/h
10:00 AM
7° / 16°
7° / 16°
Clear Sky
56% 30 km/h
11:00 AM
6° / 17°
6° / 17°
Clear Sky
49% 34 km/h
12:00 PM
5° / 18°
5° / 18°
Clear Sky
42% 39 km/h

30 Day Averages and Extremes

  • Average high 18.8°C
  • Average low 11.0°C
  • Hottest day 26°C (05 September 2026)
  • Coldest day 0°C (30 September 2026)
  • Average humidity 67.8%
  • Days with precipitation 23 days
  • Highest precipitation 68 mm (12 September 2026)

Yesterday's Data

  • Max: 19°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 mild weather in Hertfordshire, with temperatures between 16ºC to 19ºC (60.8ºF to 66.2ºF), consider wearing:
- Casual sneakers or loafers
- Cotton socks
- Lightweight sweater or cardigan
- Light jacket (for cooler periods)

Temperature

Early
8°C / 9°C
Morning
8°C / 14°C
Afternoon
7°C / 18°C
Evening
11°C / 15°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 430
  • CO 201
  • NH3 1
  • NO2 4
  • O3 46
  • PM10 10
  • PM25 5
  • SO2 0
  • CH4 1,411

Sunrise / Sunset

05:41
18:06