Arlesey to Letchworth Garden City walk

Met Office Forecast

East England

Breezy with sunny spells. Isolated showers possible.

Today:

A fine start, before cloud thickens through the morning with a few light showers possible. However most places staying dry, with sunny spells. Whilst rather breezy, winds will be lighter than on Friday. Maximum Temperature 22C.

Tonight:

Cloud likely thickening from the south during the evening, perhaps bringing the odd spot of rain or drizzle, mostly likely to southeastern coasts. Drier, with clear spells across the northwest. Minimum Temperature 12C.

Sunday:

Early cloud and rain clearing southeastern parts during the morning. A largely fine day then follows, with sunny spells but also the chance of one or two further blustery showers. Maximum Temperature 22C.

Outlook for Monday to Wednesday:

Sunshine and occasionally heavy showers Monday. Most parts dry Tuesday, with winds easing, and turning chilly overnight. Largely fine Wednesday, with some warm sunshine, although further showers also possible.

Day 6-7 and Week 2:

Thursday will see further spells of rain and perhaps stronger winds affecting northern parts of the UK, with the south more likely to remain largely dry with sunny spells. The end of the week and into the weekend is uncertain at this stage, but will probably see the unsettled weather continuing, mainly across the north and northwest, with drier and brighter conditions elsewhere. Temperatures will recover to near or above average by day. During the remainder of the month high pressure is likely to remain close by to the southwest bringing periods of settled and warmer conditions, especially across southern areas, with perhaps the chance of some thundery showers moving up from the near continent. The north and northwest may see further spels of wet and windy weather at times.

Week 3 and 4:

Confidence remains rather low during this period. However, there are signs that high pressure will increasingly dominate the weather across the UK. Southern areas are most likely to see the driest and sunniest weather at first, perhaps with some lingering wet and potentially windy conditions affecting the north. However, longer spells of dry and sunny weather may occasionally develop across all parts. Temperatures are generally likely to be warmer than average, although there is little indication of anything exceptional at this time.

Met Office : East England : 2019-08-17T02:17:15

Daylight : Bedfordshire

Data: US Navy Observatory

Moonlight : Bedfordshire

Notes

• The moon's phase or fracillum (percentage of the moon illuminated) doesn't vary much with location.
• A full moon is not just bigger, its much brighter. A half moon ('50%') give less than 5% of the illumination of a full moon. You can walk with a half moon if its high in the sky (after dusk for a growing moon, before dawn for a shrinking moon).
• Sky glow (light reflected by air or clouds) from nearby cities, and especially snow on the ground also effect light levels.
• Times will vary a few minutes, as (i) these figures are for the centre of the county the walk is in, and, (ii) if there are hills on the horizon.
• Of course, you need a cloudless night as well!
• Data: US Navy Observatory