Grindleford Circular via Chatsworth House walk

Met Office Forecast

Yorkshire

Sunny spells and locally heavy showers today.

Today:

Largely dry with bright or sunny spells at first. However, showers will soon develop into afternoon, these will be slow-moving and locally heavy at times. Feeling warm in the sunshine in between the showers, with light winds. Maximum Temperature 16C.

Tonight:

Any showers will fade during the evening. Largely dry overnight, although low cloud will drift in from off the North Sea, leading to some hill fog in places by dawn. Minimum Temperature 7C.

Friday:

Low cloud will gradually lift, thin and break to give bright or sunny spells during the day. Generally fewer showers than preceding days, with most places staying largely dry. Cooler. Maximum Temperature 14C.

Outlook for Saturday to Monday:

Rain moving northeast overnight will break up to give widespread showers on Saturday, with some sunny spells. Further heavy and thundery showers breaking out widely on Sunday and Monday.

Day 6-7 and Week 2:

It will most likely be remaining unsettled throughout the period, with Sunday seeing sunny spells and thundery showers. Coastal parts of eastern Scotland and northeast England may also remain rather cloudy and misty. Temperatures still a little below average for most. The north will perhaps see the best of any more settled weather, with the south most likely to see the bulk of showers and thunderstorms and any longer spells of more persistent rain. It's likely to be breezy at times, especially around coastal areas in the south and west of the country. Temperatures will be near to or slightly below average, with the best of any warmer spells in the southeast, and with the formation of any overnight frosts becoming less likely.

Week 3 and 4:

Confidence remains low for this period, although typical spring weather patterns are most probable, with a mixture of sunny spells and showers, some thundery, for most parts of the UK, especially at first. Conditions will probably become more settled late May and going into June, with an increasing likelihood of drier conditions for many. Overall, the driest and most settled conditions are most probable in the south, with the north generally more unsettled as longer spells of rain and strong winds arrive from the Atlantic at times. Temperatures likely to be around average.

Met Office : Yorkshire : 2021-05-13T03:01:17

Daylight : Derbyshire

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 : Derbyshire

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!