Pewsey Circular walk

Met Office Forecast

South West England

Showers, possibly wintry, followed by a clear, icy night.

Today:

Sunday morning will see rain and snow clear the east of the region. The rest of the day will see bright spells and showers, these locally heavy, particularly over Devon. Further snow is expected, especially over high ground. Ice likely. Maximum Temperature 4C.

Tonight:

Wintry showers fading during the evening leaving a largely dry and clear night, though some cloud and isolated showers lingering in the west. Frosty and icy, especially where snow accumulated. Minimum Temperature -7C.

Monday:

A largely dry day, with the odd shower possible in the west. Some high cloud moving in from the southwest, though most will see plenty of sunshine. Maximum Temperature 6C.

Outlook for Tuesday to Thursday:

Tuesday a band of cloud and rain moving northeastwards, with possible hill snow. Wednesday and Thursday cloudy with outbreaks of rain, heavy at times, and strong winds.

Day 6-7 and Week 2:

Unsettled conditions look likely to dominate for this period, with low pressure across the UK. Therefore, this should, bring changeable weather to most of the country, with periods of rain, showers, and strong winds at times. While mild westerly and southwesterly winds are expected to be dominant for most of the period, occasional colder northerly winds are possible, bringing a chance of snowfall, likely confined to the far northern parts. Towards the end of the period, we may see high pressure bringing a higher than average chance of cold weather more widely with wintry outbreaks. However, there is a chance of drier than average conditions, which would bring an increased risk of frost and fog.

Week 3 and 4:

Confidence is low for this period, but current signals indicate a possible high pressure system around or near the UK during this period. This would likely bring cold northerly winds, producing colder than average temperatures and wintry outbreaks. The second half of February is likely to have a mixture of weather types, with periods of wet, windy and milder weather interspersed with drier, calmer, colder periods.

Met Office : South West England : 2021-01-24T02:57:05

Daylight : Wiltshire

Day length is dusk to dawn. Times will vary a little if there is a hill on the horizon.

It should still be light enough to read at dawn and dusk, so there will be enough light for walking even earlier (later).

Moonlight : Wiltshire

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, (ii) if there are hills on the horizon, and (iii) if you are on a hill
• Of course, you need a cloudless night as well!