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Rule Morning Frost

Franconia - Morning Frost - New England, USA

Franconia, 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 53% failing

Currently

Real-time conditions
Soil Temperature8.9°C
Dew Point6.2°C (moderate dew point)
Wind Speed1.4m/s (calm conditions)
Cloud Cover100%

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 80 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
Sun, May 24
24:000%1.5m/s
01:000%1.6m/s
02:000%1.6m/s
03:000%1.8m/s
04:000%1.8m/s
05:000%1.6m/s
06:000%1.3m/s
07:000%1.4m/s
08:000%1.2m/s
09:000%1.4m/s
10:000%1.9m/s
11:000%2.2m/s
12:000%1.9m/s
13:000%2.1m/s
14:000%2m/s
15:000%1.9m/s
16:001.6%2m/s
17:001.6%2m/s
18:001.6%1.7m/s
19:001.6%2.2m/s
20:001.6%1.9m/s
21:001.8%1.7m/s
22:001.6%1.9m/s
23:001.6%1.7m/s
Mon, May 25
24:001.4%1.6m/s
01:001.2%1.7m/s
02:001.4%1.5m/s
03:001.4%1.1m/s
04:001.4%1.3m/s
05:001.6%0.58m/s
06:001.4%1.6m/s
07:001.4%0.98m/s
08:001.4%1.1m/s
09:001.6%0.42m/s
10:001.6%0.63m/s
11:001.6%0.72m/s
12:001.4%1m/s
13:001.4%1.1m/s
14:002.6%1.3m/s
15:002.6%1.1m/s
16:003.2%1.2m/s
17:003.4%1.2m/s
18:000%1.2m/s
19:000%1.4m/s
20:000%0.85m/s
21:000%1.1m/s
22:000%0.78m/s
23:000%0.37m/s
Tue, May 26
24:000%0.82m/s
01:000%1m/s
02:000%0.91m/s
03:000%0.94m/s
04:000%0.75m/s
05:000%0.84m/s
06:002%0.52m/s
07:002.3%0.28m/s
08:000%0.38m/s
09:000%0.89m/s
10:000%1.4m/s
11:000%2m/s
12:000%2.5m/s
13:000%2.8m/s
14:000%3.2m/s
15:000%2.9m/s
16:000%2.7m/s
17:000%2.4m/s
18:000%2.2m/s
19:000%2.1m/s
20:000%1.9m/s
21:000%1.9m/s
22:000%1.9m/s
23:000%1.9m/s
Wed, May 27
24:000%1.8m/s
01:000%1.8m/s
02:000%1.8m/s
03:000%1.9m/s
04:000%1.9m/s
05:000%2m/s
06:000%2.5m/s
07:000%2.9m/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, May 24 Sunrise 05:11 Sunset 20:16
09:00
6.2°C 8.9°C 6.8°C - 100% 0.04kPa
10:00
6.1°C 8.8°C 6.8°C - 100% 0.05kPa
11:00
5.4°C 8.7°C 6.3°C - 100% 0.06kPa
12:00
5°C 8.6°C 5.8°C - 100% 0.05kPa
13:00
4.8°C 8.4°C 5.5°C - 100% 0.05kPa
14:00
4.4°C 8.3°C 5.3°C - 100% 0.05kPa
15:00
4.4°C 8.2°C 5.4°C - 100% 0.06kPa
16:00
4.5°C 8°C 5.5°C - 100% 0.06kPa
17:00
4.4°C 7.9°C 5.5°C - 100% 0.07kPa
18:00
4.5°C 7.8°C 5.7°C - 100% 0.08kPa
19:00
4.1°C 7.7°C 5.3°C - 100% 0.07kPa
20:00
3.9°C 7.6°C 5°C - 100% 0.07kPa
21:00
3.8°C 7.5°C 5°C - 100% 0.07kPa
22:00
4°C 7.3°C 5.2°C - 100% 0.07kPa
23:00
4.3°C 7.2°C 5.3°C - 100% 0.06kPa
Mon, May 25 Sunrise 05:11 Sunset 20:17
24:00
5°C 7.1°C 5.6°C - 100% 0.03kPa
01:00
5.5°C 7°C 5.9°C - 100% 0.02kPa
02:00
5.9°C 7°C 6.2°C - 100% 0.02kPa
03:00
6.1°C 6.9°C 6.4°C - 100% 0.02kPa
04:00
6.3°C 6.9°C 6.6°C - 100% 0.02kPa
05:00
6.6°C 6.8°C 6.8°C - 100% 0.01kPa
06:00
6.8°C 6.8°C 6.9°C - 100% 0.01kPa
07:00
7.1°C 6.8°C 7.3°C - 100% 0.01kPa
08:00
7.2°C 6.8°C 7.5°C - 100% 0.02kPa
09:00
7.8°C 6.8°C 8°C - 100% 0.01kPa
10:00
7.7°C 6.8°C 7.9°C - 100% 0.01kPa
11:00
7.9°C 6.9°C 8.1°C - 100% 0.01kPa
12:00
8.6°C 6.9°C 8.8°C - 100% 0.02kPa
13:00
9.8°C 7°C 11°C - 100% 0.06kPa
14:00
11°C 7.2°C 14°C - 100% 0.21kPa
15:00
11°C 7.4°C 14°C - 100% 0.28kPa
16:00
11°C 7.7°C 15°C - 100% 0.42kPa
17:00
11°C 8°C 15°C - 100% 0.36kPa
18:00
12°C 8.2°C 14°C - 100% 0.27kPa
19:00
12°C 8.2°C 14°C - 100% 0.18kPa
20:00
11°C 8.4°C 12°C - 100% 0.13kPa
21:00
9.9°C 8.5°C 12°C - 100% 0.16kPa
22:00
8.9°C 8.5°C 10°C - 100% 0.12kPa
23:00
9°C 8.5°C 11°C - 100% 0.16kPa
Tue, May 26 Sunrise 05:10 Sunset 20:18
24:00
8.6°C 8.5°C 11°C - 100% 0.19kPa
01:00
7.5°C 8.5°C 8.5°C - 86% 0.07kPa
02:00
7°C 8.4°C 7.9°C - 100% 0.06kPa
03:00
6.7°C 8.3°C 7.6°C - 100% 0.06kPa
04:00
6.6°C 8.2°C 7.4°C - 100% 0.06kPa
05:00
6.6°C 8.1°C 7.5°C - 100% 0.06kPa
06:00
7.1°C 8°C 8.3°C - 100% 0.08kPa
07:00
8.2°C 8°C 10°C - 84% 0.17kPa
08:00
8.9°C 8.2°C 13°C - 13% 0.39kPa
09:00
9.2°C 8.4°C 17°C - 10% 0.74kPa
10:00
9.1°C 8.8°C 19°C - 0% 1kPa
11:00
8.8°C 9.2°C 21°C - 0% 1.3kPa
12:00
8.7°C 9.6°C 22°C - 0% 1.5kPa
13:00
8.8°C 10°C 23°C - 0% 1.6kPa
14:00
9.1°C 10°C 23°C - 0% 1.7kPa
15:00
11°C 11°C 19°C - 21% 0.98kPa
16:00
11°C 11°C 16°C - 42% 0.5kPa
17:00
10°C 11°C 12°C - 63% 0.17kPa
18:00
10°C 11°C 13°C - 75% 0.23kPa
19:00
11°C 11°C 14°C - 88% 0.29kPa
20:00
11°C 11°C 14°C - 100% 0.35kPa
21:00
11°C 11°C 14°C - 91% 0.29kPa
22:00
11°C 11°C 13°C - 82% 0.23kPa
23:00
11°C 11°C 13°C - 73% 0.17kPa
Wed, May 27 Sunrise 05:09 Sunset 20:19
24:00
11°C 11°C 13°C - 82% 0.2kPa
01:00
12°C 11°C 14°C - 91% 0.23kPa
02:00
12°C 11°C 14°C - 100% 0.25kPa
03:00
12°C 11°C 15°C - 100% 0.26kPa
04:00
12°C 11°C 15°C - 99% 0.28kPa
05:00
12°C 11°C 15°C - 98% 0.29kPa
06:00
11°C 12°C 16°C - 87% 0.5kPa
07:00
11°C 12°C 18°C - 75% 0.75kPa
08:00
9.4°C 12°C 19°C - 63% 1.1kPa
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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