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Rule Morning Frost

Bretton Woods - Morning Frost - New England, USA

Bretton Woods, New Hampshire, United States

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
Time Window 88% failing
Wind Speed 46% failing

Currently

Real-time conditions
Soil Temperature12.3°C
Dew Point7.3°C (moderate dew point)
Wind Speed1.8m/s (calm conditions)
Cloud Cover0%

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in America/New_York

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 predicts the first frost events that transform New England's fall foliage into crystalline masterpieces. We track overnight temperatures, dewpoint, and wind conditions to identify when frost will coat leaves, grasses, and stone walls with sparkling ice crystals.

The first hard frost of autumn is a cherished event in New England—it triggers the final phase of fall color and creates magical dawn conditions where ice crystals catch golden light. The region's iconic stone walls, covered bridges, and sugar maples take on new dimension when dusted with frost.

What makes New England frost photography exceptional:

  • Foliage enhancement - Frost crystals on red and orange leaves create otherworldly textures and highlights
  • Stone wall character - New England's ubiquitous dry-stacked stone walls gain definition and drama when frost-covered
  • Sugar maple groves - Vermont and New Hampshire maple stands combine brilliant color with frost textures
  • Historic elements - Colonial-era buildings, covered bridges, and farmsteads gain timeless quality under frost

Best conditions occur on clear, calm nights in October when temperatures drop to 28-32°F. Frost melts quickly after sunrise, so arrive before dawn for frost plus golden hour light. Protected valleys and hollows accumulate frost more heavily than exposed hilltops.

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72-hour requirements breakdown

What passed or failed, hour by hour
0matching hours in the next 95 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
America/New_York
Time Window
Sunrise -45m to +90m
Frost Probability
≥ 60.0%
Wind Speed
≤ 1.5m/s
Sat, Jun 6
22:000%3.4m/s
23:000%2.4m/s
Sun, Jun 7
24:000%2.5m/s
01:000%4.2m/s
02:000%4.3m/s
03:000%3.7m/s
04:000%3.7m/s
05:000%3.8m/s
06:000%3.7m/s
07:000%3.6m/s
08:000%3m/s
09:000%2.8m/s
10:000%2.8m/s
11:000%2.7m/s
12:000%2.4m/s
13:000%2.4m/s
14:000%2.2m/s
15:000%2.3m/s
16:000%3m/s
17:000%3.2m/s
18:000%3m/s
19:000%3.1m/s
20:000%2.3m/s
21:000%1.6m/s
22:000%1.8m/s
23:000%1.7m/s
Mon, Jun 8
24:000%1.4m/s
01:000%1.3m/s
02:000%0.78m/s
03:000%0.69m/s
04:000%0.53m/s
05:000%0.88m/s
06:000%0.6m/s
07:000%1.4m/s
08:000%1.5m/s
09:000%2.2m/s
10:000%2.9m/s
11:000%3m/s
12:000%2.7m/s
13:000%2.7m/s
14:000%3m/s
15:000%2.8m/s
16:000%2.7m/s
17:000%2.6m/s
18:000%2.1m/s
19:000%1.6m/s
20:000%1.3m/s
21:000%0.7m/s
22:000%0.64m/s
23:000%0.52m/s
Tue, Jun 9
24:000%0.45m/s
01:000%0.49m/s
02:000%0.59m/s
03:000%0.56m/s
04:000%0.23m/s
05:000%0.32m/s
06:000%0.04m/s
07:000%0.91m/s
08:000%1.5m/s
09:000%1.9m/s
10:000%2.3m/s
11:000%2.5m/s
12:000%2.7m/s
13:000%2.8m/s
14:000%2.6m/s
15:000%2.4m/s
16:000%2.5m/s
17:000%2.9m/s
18:000%2m/s
19:000%1.4m/s
20:000%0.34m/s
21:000%0.88m/s
22:000%1.3m/s
23:000%1.6m/s
Wed, Jun 10
24:000%1.8m/s
01:000%1.8m/s
02:000%1.8m/s
03:000%1.6m/s
04:000%1.6m/s
05:000%1.6m/s
06:000%1.4m/s
07:000%1m/s
08:000%0.48m/s
09:000%0.55m/s
10:000%0.63m/s
11:000%0.7m/s
12:000%0.89m/s
13:000%1.1m/s
14:000%1.3m/s
15:000%1.2m/s
16:000%1.1m/s
17:000%0.96m/s
18:000%0.91m/s
19:000%0.86m/s
20:000%0.81m/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
America/New_York
Dew Point
°C
Surface Temperature
°C
Temperature
°C
Time Window
Total Cloud Coverage
%
Vapor Pressure Deficit
kPa
Sun, Jun 7 Sunrise 05:02 Sunset 20:27
22:00
7.3°C 12°C 7.9°C - 0% 0.05kPa
23:00
6.7°C 12°C 7.6°C - 0% 0.07kPa
Mon, Jun 8 Sunrise 05:02 Sunset 20:27
24:00
5.7°C 12°C 7.1°C - 0% 0.1kPa
01:00
4.8°C 12°C 6.7°C - 4% 0.12kPa
02:00
4.3°C 12°C 6.3°C - 51% 0.13kPa
03:00
4.2°C 11°C 6.2°C - 72% 0.12kPa
04:00
4°C 11°C 6°C - 100% 0.12kPa
05:00
4.3°C 11°C 6.1°C - 5% 0.11kPa
06:00
5.3°C 11°C 7.2°C - 77% 0.12kPa
07:00
7.6°C 11°C 9.6°C - 94% 0.15kPa
08:00
7.3°C 11°C 12°C - 5% 0.37kPa
09:00
5.2°C 11°C 15°C - 6% 0.81kPa
10:00
5.1°C 11°C 17°C - 5% 1kPa
11:00
5.7°C 11°C 18°C - 5% 1.1kPa
12:00
5.6°C 11°C 19°C - 40% 1.3kPa
13:00
5.3°C 11°C 20°C - 92% 1.5kPa
14:00
5.4°C 12°C 21°C - 100% 1.6kPa
15:00
5.6°C 12°C 21°C - 29% 1.6kPa
16:00
5.9°C 12°C 21°C - 44% 1.6kPa
17:00
6.4°C 12°C 21°C - 5% 1.5kPa
18:00
8.5°C 13°C 20°C - 20% 1.2kPa
19:00
12°C 13°C 18°C - 19% 0.67kPa
20:00
11°C 13°C 15°C - 16% 0.38kPa
21:00
8.8°C 13°C 13°C - 5% 0.34kPa
22:00
7.4°C 13°C 12°C - 5% 0.4kPa
23:00
6.6°C 12°C 12°C - 5% 0.42kPa
Tue, Jun 9 Sunrise 05:02 Sunset 20:28
24:00
6.3°C 12°C 12°C - 5% 0.41kPa
01:00
6.3°C 12°C 11°C - 5% 0.38kPa
02:00
6.7°C 12°C 11°C - 5% 0.32kPa
03:00
6.9°C 12°C 11°C - 5% 0.28kPa
04:00
7.3°C 12°C 10°C - 5% 0.24kPa
05:00
7.9°C 12°C 11°C - 37% 0.2kPa
06:00
8.6°C 12°C 12°C - 12% 0.27kPa
07:00
9.5°C 12°C 15°C - 5% 0.55kPa
08:00
8.5°C 12°C 17°C - 5% 0.88kPa
09:00
8°C 12°C 19°C - 5% 1.1kPa
10:00
7.6°C 12°C 20°C - 5% 1.3kPa
11:00
7.6°C 12°C 21°C - 5% 1.5kPa
12:00
7.5°C 13°C 22°C - 5% 1.6kPa
13:00
7.3°C 13°C 23°C - 43% 1.7kPa
14:00
8°C 13°C 23°C - 100% 1.7kPa
15:00
8.4°C 13°C 23°C - 100% 1.7kPa
16:00
8.6°C 14°C 23°C - 92% 1.8kPa
17:00
8.8°C 14°C 23°C - 5% 1.7kPa
18:00
12°C 14°C 23°C - 43% 1.4kPa
19:00
14°C 14°C 20°C - 99% 0.75kPa
20:00
12°C 14°C 17°C - 39% 0.52kPa
21:00
9.7°C 14°C 16°C - 100% 0.55kPa
22:00
8.4°C 14°C 15°C - 100% 0.66kPa
23:00
7.6°C 14°C 15°C - 100% 0.72kPa
Wed, Jun 10 Sunrise 05:02 Sunset 20:28
24:00
7.5°C 14°C 16°C - 100% 0.75kPa
01:00
8.1°C 14°C 16°C - 100% 0.71kPa
02:00
9.2°C 14°C 16°C - 100% 0.63kPa
03:00
11°C 14°C 16°C - 64% 0.59kPa
04:00
11°C 14°C 15°C - 10% 0.37kPa
05:00
12°C 14°C 15°C - 100% 0.3kPa
06:00
13°C 14°C 17°C - 100% 0.39kPa
07:00
15°C 14°C 19°C - 100% 0.49kPa
08:00
14°C 14°C 17°C - 100% 0.27kPa
09:00
16°C 15°C 17°C - 100% 0.2kPa
10:00
17°C 15°C 18°C - 100% 0.12kPa
11:00
19°C 16°C 19°C - 100% 0.03kPa
12:00
18°C 16°C 19°C - 100% 0.03kPa
13:00
18°C 16°C 18°C - 100% 0.02kPa
14:00
18°C 16°C 18°C - 100% 0.01kPa
15:00
18°C 16°C 18°C - 100% 0.01kPa
16:00
18°C 16°C 18°C - 100% 0.01kPa
17:00
17°C 16°C 18°C - 100% 0.01kPa
18:00
17°C 16°C 17°C - 100% 0.01kPa
19:00
17°C 16°C 17°C - 100% 0.01kPa
20:00
17°C 16°C 17°C - 100% 0.01kPa
21:00
17°C 16°C 17°C - 100% 0.01kPa
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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