Hertfordshire, United Kingdom Weather
- Hertfordshire, United Kingdom Weather
- Current conditions
- Weather forecast
- Averages and extremes
- Yesterday's Data
- 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 Weather Summary
- Weather averages by month
- Hertfordshire's weather
- Frequently asked questions
- Comments
Current conditions
Updated:
Overcast
15°C
°C
°F
Condition: Overcast
Pressure: 1,010 hPa
Feel like: 15 °C
Temperature: 15°C
Cloud: 88%
Humidity: 86%
Wind: SW - 6 km/h
Visibility: 17.12 km
Thu
24 Sep
10°C / 20°C
Drizzle
Fri
25 Sep
9°C / 19°C
Drizzle
Sat
26 Sep
10°C / 18°C
Overcast
Sun
27 Sep
10°C / 15°C
Drizzle
Mon
28 Sep
12°C / 21°C
Slight Thunderstorm
Hourly forecast today:
05:00 AM
13° / 15°
13° / 15°
Overcast
86%
13 km/h
06:00 AM
13° / 14°
13° / 14°
Partly Cloudy
91%
16 km/h
07:00 AM
13° / 15°
13° / 15°
Overcast
87%
19 km/h
08:00 AM
14° / 17°
14° / 17°
Overcast
81%
25 km/h
09:00 AM
13° / 19°
13° / 19°
Mainly Clear
67%
30 km/h
10:00 AM
11° / 20°
11° / 20°
Clear Sky
54%
33 km/h
11:00 AM
11° / 21°
11° / 21°
Partly Cloudy
54%
36 km/h
12:00 PM
11° / 21°
11° / 21°
Overcast
54%
36 km/h
13:00 PM
11° / 21°
11° / 21°
Overcast
56%
36 km/h
14:00 PM
11° / 21°
11° / 21°
Partly Cloudy
54%
35 km/h
15:00 PM
11° / 21°
11° / 21°
Overcast
54%
41 km/h
30 Day Averages and Extremes
- Average high 17.83°C
- Average low 10.3°C
- Hottest day 23°C (13 September 2026)
- Coldest day 0°C (06 October 2026)
- Average humidity 72.23%
- Days with precipitation 21 days
- Highest precipitation 68 mm (12 September 2026)
Yesterday's Data
- Max: 21°C
- Min: 11°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
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- Ceredigion
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- Coventry
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- Calderdale
- Bexley
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 warm weather in Hertfordshire, with temperatures between 17ºC to 20ºC (62.6ºF to 68.0ºF), you might consider wearing:
- T-shirt or short-sleeve blouse
- Cotton or linen fabrics
- Sunscreen (if spending time outdoors)
- Sunglasses
Temperature
Early
12°C / 14°C
Morning
13°C / 19°C
Afternoon
11°C / 21°C
Evening
11°C / 12°C
Air quality
Moderate
Acceptable air quality, some pollutants present, minor health concerns for sensitive individuals
- CO2 449
- CO 203
- NH3 1
- NO2 15
- O3 40
- PM10 23
- PM25 17
- SO2 1
- CH4 1,434
Sunrise / Sunset
05:50
17:54