Climate averages 1991–2020
Hemel Hempstead weather
in October.
A cool, moderately wet month: the 6th warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
October is a cool month in Hemel Hempstead: daytime highs average 13.7°C and nights cool to about 8.0°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 60 mm of rain on roughly 11 days, which makes October a moderately wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 43 min on an average October day.
The nearest other city in this atlas is St Albans (8 km away). In October its highs average 14.0°C, about as warm as Hemel Hempstead, with 58 mm of rain.
Among the 143 cities listed in the United Kingdom, Hemel Hempstead ranks joint 68th of 143 for the warmest October highs and joint 29th of 143 for the driest October (rainfall, lowest first). The mean October high of those 143 cities is 13.6°C; Hemel Hempstead is 0.2°C warmer than that mean.
From October to November, average highs fall by 4.2°C to 9.6°C, and monthly rainfall rises from 60 mm to 62 mm.
The annual picture
October in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Hemel Hempstead climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 6.6°C1.9°C | 1.9°C | 54 | 11.2 | 8.48 h |
| February | 7.2°C1.7°C | 1.7°C | 45 | 9.9 | 9.910 h |
| March | 9.6°C2.9°C | 2.9°C | 44 | 10.3 | 11.812 h |
| April | 12.5°C4.6°C | 4.6°C | 50 | 11.4 | 13.814 h |
| May | 15.6°C7.7°C | 7.7°C | 56 | 10.5 | 15.616 h |
| June | 18.5°C10.7°C | 10.7°C | 58 | 10.5 | 16.617 h |
| July | 20.7°C12.9°C | 12.9°C | 58 | 11.2 | 16.216 h |
| August | 20.4°C12.8°C | 12.8°C | 62 | 10.7 | 14.615 h |
| September | 17.7°C10.7°C | 10.7°C | 51 | 9.4 | 12.713 h |
| October, selected | 13.7°C8.0°C | 8.0°C | 60 | 11.3 | 10.711 h |
| November | 9.6°C4.6°C | 4.6°C | 62 | 11.2 | 8.99 h |
| December | 6.9°C2.5°C | 2.5°C | 57 | 11.2 | 7.98 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
October in nearby cities
- St Albans in OctoberUnited Kingdom · 8 kmHigh 14.0°C · Low 8.2°C · 58 mm rain
- Watford in OctoberUnited Kingdom · 12 kmHigh 14.2°C · Low 8.4°C · 60 mm rain
- Luton in OctoberUnited Kingdom · 14 kmHigh 13.9°C · Low 7.9°C · 59 mm rain
- Harrow in OctoberUnited Kingdom · 21 kmHigh 14.2°C · Low 8.4°C · 58 mm rain
- Uxbridge in OctoberUnited Kingdom · 23 kmHigh 14.3°C · Low 8.4°C · 60 mm rain
- Stevenage in OctoberUnited Kingdom · 24 kmHigh 14.1°C · Low 8.0°C · 58 mm rain
- High Wycombe in OctoberUnited Kingdom · 25 kmHigh 14.2°C · Low 8.2°C · 61 mm rain
- Aylesbury in OctoberUnited Kingdom · 26 kmHigh 14.0°C · Low 8.0°C · 61 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Hemel Hempstead) is explained once on the Hemel Hempstead year overview and on the Sources, method and limits page.
Watford lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.