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Rule Morning Frost

Slad Valley - Morning Frost - Cotswolds

Stroud, England, United Kingdom

Frost crystals on calm, cold mornings near sunrise

No opportunities right now
Here’s what usually blocks matches

No Morning Frost opportunities in the next 14 days

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Rule requirements (key thresholds)
Time Window · Sunrise -45m to +90m Frost Probability · ≥ 60.0% Wind Speed · ≤ 1.5m/s

Tip: Scroll down to the 72-hour table to see exactly which condition fails hour by hour.

Most common blockers (next 72 hours)
Frost Probability 100% failing
Wind Speed 100% failing
Time Window 88% failing

Currently

Real-time conditions
Soil Temperature12.9°C
Dew Point6.9°C (moderate dew point)
Wind Speed6.3m/s (moderate winds)
Cloud Cover99%

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/London

No opportunities in the next 10 days

See the blocker timeline below to understand which conditions are preventing matches.

What this forecast looks for

Plain-language explanation from the rule

This forecast identifies when hard frost transforms the Cotswolds' honey-stone architecture and pastoral landscapes into crystalline winter wonderlands. We track overnight minimum temperatures, clear sky conditions, and ground frost risk to predict optimal frosted morning photography.

The Cotswolds' inland position and elevation (typically 200-330m) create reliable frost conditions during winter anticyclones. Clear skies and light winds allow radiative cooling to create heavy frost deposits on thatched roofs, dry stone walls, and riverside vegetation—all set against honey-colored Jurassic limestone that glows warmly against frozen foregrounds.

What makes Cotswolds frost photography distinctive:

  • Frosted thatch - Castle Combe's thatched cottages with heavy frost on golden stone—quintessentially English winter scenes
  • Arlington Row ice - Bibury's iconic weavers' cottages with frosted rooflines and icy River Coln creating mirror reflections
  • Frozen waterways - Bourton-on-the-Water's bridges with icy stream edges, Lower Slaughter's mill with frozen mill race
  • Churchyard frost - Painswick's famous 99 yew trees with frost-laden branches surrounding ancient gravestones

The most photogenic frost occurs during settled high pressure periods (December-February), particularly after clear, calm nights. Arlington Row at Bibury is England's most photographed village for good reason—frost on the 17th-century weavers' cottages creates magazine-cover compositions. Castle Combe's compact valley setting traps cold air, producing reliable frost that highlights its honey-stone cottages and medieval market cross. Arrive at first light while frost remains intact—winter sunrise around 8:00am gives time to scout compositions in pre-dawn light. The contrast between warm honey-stone and cold blue frost works beautifully in morning light.

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72-hour requirements breakdown

What passed or failed, hour by hour
0matching hours in the next 81 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Europe/London
Time Window
Sunrise -45m to +90m
Frost Probability
≥ 60.0%
Wind Speed
≤ 1.5m/s
Mon, Jun 8
05:000%4.9m/s
06:000%5.4m/s
07:000%5.4m/s
08:000%4.3m/s
09:000%3.9m/s
10:000%4.9m/s
11:000%4.1m/s
12:000%5.1m/s
13:000%5.1m/s
14:000%7.1m/s
15:000%6.6m/s
16:000%6.3m/s
17:000%5m/s
18:000%5.6m/s
19:000%6.4m/s
20:000%6.6m/s
21:000%5.8m/s
22:000%4.3m/s
23:000%3.3m/s
Tue, Jun 9
24:000%3.3m/s
01:000%3.4m/s
02:000%3.3m/s
03:000%3.5m/s
04:000%3.9m/s
05:000%4m/s
06:000%4.5m/s
07:000%5m/s
08:000%5.5m/s
09:000%6.1m/s
10:000%6.5m/s
11:000%7m/s
12:000%7.4m/s
13:000%8.2m/s
14:000%8.6m/s
15:000%8.6m/s
16:000%7.8m/s
17:000%7.8m/s
18:000%7.3m/s
19:000%6.9m/s
20:000%6.2m/s
21:000%5.6m/s
22:000%4.8m/s
23:000%4.2m/s
Wed, Jun 10
24:000%4.1m/s
01:000%4.1m/s
02:000%4m/s
03:000%3.8m/s
04:000%3.2m/s
05:000%2.6m/s
06:000%2.6m/s
07:000%3m/s
08:000%4.1m/s
09:000%4.5m/s
10:000%4.9m/s
11:000%6.1m/s
12:000%7.1m/s
13:000%6.9m/s
14:000%7.5m/s
15:000%6.1m/s
16:000%7.4m/s
17:000%7.5m/s
18:000%6.1m/s
19:000%5.6m/s
20:000%5.3m/s
21:000%3.8m/s
22:000%3.5m/s
23:000%3.3m/s
Thu, Jun 11
24:000%3.3m/s
01:000%3.2m/s
02:000%4.1m/s
03:000%5m/s
04:000%5.9m/s
05:000%6.5m/s
06:000%7.2m/s
07:000%7.8m/s
08:000%7.4m/s
09:000%7.1m/s
10:000%6.7m/s
11:000%6.4m/s
12:000%6.1m/s
13:000%5.8m/s
How to read: colored cells show whether each predicate requirement is met; highlighted rows mean the full rule matched (an opportunity).

What does Frost Probability mean?

Inputs that drive the score

This derived score summarizes multiple raw weather signals. The table below shows the supporting inputs hour by hour, so you can see what's pushing the score up or down.

Time
Europe/London
Dew Point
°C
Surface Temperature
°C
Temperature
°C
Time Window
Total Cloud Coverage
%
Vapor Pressure Deficit
kPa
Mon, Jun 8 Sunrise 04:52 Sunset 21:24
16:00
6.9°C 13°C 15°C - 99% 0.74kPa
17:00
6.6°C 13°C 14°C - 56% 0.65kPa
18:00
7.2°C 13°C 15°C - 52% 0.64kPa
19:00
7.4°C 13°C 13°C - 32% 0.49kPa
20:00
6.7°C 13°C 12°C - 5% 0.39kPa
21:00
6.1°C 13°C 10°C - 5% 0.29kPa
22:00
5.9°C 13°C 8.6°C - 1% 0.19kPa
23:00
5.9°C 12°C 7.1°C - 6% 0.08kPa
Tue, Jun 9 Sunrise 04:52 Sunset 21:24
24:00
5.7°C 12°C 6.8°C - 94% 0.07kPa
01:00
6°C 12°C 6.9°C - 5% 0.06kPa
02:00
6.1°C 12°C 6.8°C - 5% 0.05kPa
03:00
6.1°C 12°C 6.7°C - 24% 0.04kPa
04:00
6.4°C 11°C 7.1°C - 100% 0.05kPa
05:00
6.9°C 11°C 7.8°C - 100% 0.07kPa
06:00
7.3°C 11°C 8.5°C - 100% 0.09kPa
07:00
8.1°C 11°C 9.7°C - 77% 0.13kPa
08:00
8.1°C 11°C 11°C - 11% 0.21kPa
09:00
8°C 11°C 12°C - 31% 0.29kPa
10:00
8.1°C 11°C 12°C - 10% 0.36kPa
11:00
6.8°C 11°C 14°C - 5% 0.57kPa
12:00
4.9°C 11°C 15°C - 8% 0.81kPa
13:00
6°C 12°C 15°C - 41% 0.74kPa
14:00
7°C 12°C 15°C - 49% 0.66kPa
15:00
7.9°C 12°C 14°C - 86% 0.56kPa
16:00
8.4°C 12°C 14°C - 14% 0.48kPa
17:00
8.5°C 12°C 14°C - 20% 0.48kPa
18:00
8.8°C 12°C 13°C - 4% 0.4kPa
19:00
8.7°C 12°C 13°C - 5% 0.33kPa
20:00
8.2°C 12°C 12°C - 5% 0.28kPa
21:00
7.6°C 12°C 10°C - 6% 0.2kPa
22:00
7.3°C 12°C 8.9°C - 40% 0.12kPa
23:00
7.2°C 12°C 8.3°C - 96% 0.08kPa
Wed, Jun 10 Sunrise 04:51 Sunset 21:24
24:00
7.2°C 12°C 8.1°C - 100% 0.07kPa
01:00
7.1°C 11°C 8.2°C - 100% 0.07kPa
02:00
7.1°C 11°C 8.3°C - 100% 0.08kPa
03:00
7.1°C 11°C 8.6°C - 100% 0.11kPa
04:00
7°C 11°C 8.6°C - 89% 0.11kPa
05:00
6.9°C 11°C 8.9°C - 81% 0.14kPa
06:00
7.2°C 11°C 9°C - 53% 0.13kPa
07:00
7.5°C 11°C 10°C - 20% 0.23kPa
08:00
6.3°C 11°C 11°C - 2% 0.4kPa
09:00
6°C 11°C 13°C - 5% 0.52kPa
10:00
6.4°C 11°C 13°C - 65% 0.58kPa
11:00
7.6°C 11°C 14°C - 54% 0.52kPa
12:00
8.5°C 11°C 14°C - 29% 0.44kPa
13:00
7.1°C 11°C 15°C - 72% 0.71kPa
14:00
6.7°C 12°C 15°C - 100% 0.7kPa
15:00
7.8°C 12°C 13°C - 37% 0.48kPa
16:00
8.5°C 12°C 14°C - 30% 0.5kPa
17:00
8.5°C 12°C 14°C - 72% 0.51kPa
18:00
9°C 12°C 14°C - 60% 0.45kPa
19:00
9°C 12°C 13°C - 86% 0.37kPa
20:00
8.7°C 12°C 12°C - 27% 0.3kPa
21:00
8.1°C 12°C 10°C - 31% 0.17kPa
22:00
7.7°C 12°C 8.7°C - 81% 0.08kPa
23:00
7.5°C 12°C 8.4°C - 80% 0.06kPa
Thu, Jun 11 Sunrise 04:51 Sunset 21:25
24:00
7.4°C 11°C 8°C - 6% 0.05kPa
01:00
7.2°C 11°C 7.9°C - 64% 0.05kPa
02:00
8.1°C 11°C 8.7°C - 76% 0.05kPa
03:00
9°C 11°C 9.6°C - 88% 0.05kPa
04:00
9.9°C 10°C 10°C - 100% 0.05kPa
05:00
10°C 11°C 11°C - 100% 0.05kPa
06:00
10°C 11°C 11°C - 100% 0.05kPa
07:00
11°C 11°C 11°C - 100% 0.04kPa
08:00
12°C 11°C 12°C - 100% 0.05kPa
09:00
13°C 11°C 13°C - 100% 0.06kPa
10:00
14°C 11°C 14°C - 100% 0.06kPa
11:00
14°C 11°C 14°C - 100% 0.06kPa
12:00
14°C 11°C 15°C - 100% 0.06kPa
13:00
14°C 11°C 15°C - 100% 0.06kPa
14:00
13°C 11°C 14°C - 81% 0.06kPa
15:00
13°C 11°C 13°C - 61% 0.06kPa
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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