Climate averages 1991–2020
Hemel Hempstead weather
in March.
A cool, moderately wet month: the joint 8th warmest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
March is a cool month in Hemel Hempstead: daytime highs average 9.6°C and nights cool to about 2.9°C. By daytime temperature it is the joint 8th warmest of the 12 months.
Expect about 44 mm of rain on roughly 10 days, which makes March a moderately wet month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 11 h 50 min on an average March day.
The nearest other city in this atlas is St Albans (8 km away). In March its highs average 9.8°C, about as warm as Hemel Hempstead, with 43 mm of rain.
Among the 143 cities listed in the United Kingdom, Hemel Hempstead ranks joint 67th of 143 for the warmest March highs and joint 32nd of 143 for the driest March (rainfall, lowest first). The mean March high of those 143 cities is 9.5°C; Hemel Hempstead is 0.1°C warmer than that mean.
From March to April, average highs rise by 2.9°C to 12.5°C, and monthly rainfall rises from 44 mm to 50 mm.
The annual picture
March 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, selected | 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 | 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
March in nearby cities
- St Albans in MarchUnited Kingdom · 8 kmHigh 9.8°C · Low 3.2°C · 43 mm rain
- Watford in MarchUnited Kingdom · 12 kmHigh 10.0°C · Low 3.4°C · 44 mm rain
- Luton in MarchUnited Kingdom · 14 kmHigh 9.8°C · Low 2.9°C · 44 mm rain
- Harrow in MarchUnited Kingdom · 21 kmHigh 10.0°C · Low 3.4°C · 42 mm rain
- Uxbridge in MarchUnited Kingdom · 23 kmHigh 10.1°C · Low 3.4°C · 43 mm rain
- Stevenage in MarchUnited Kingdom · 24 kmHigh 9.9°C · Low 3.0°C · 43 mm rain
- High Wycombe in MarchUnited Kingdom · 25 kmHigh 10.1°C · Low 3.2°C · 45 mm rain
- Aylesbury in MarchUnited Kingdom · 26 kmHigh 10.0°C · Low 3.0°C · 45 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.