Rule Morning Frost

Morning Frost Forecast for Bretton Woods, New England, USA

Bretton Woods, New Hampshire, United States

Bretton Woods faces the Presidential Range across an open valley, where the Mount Washington Hotel and forested ridges provide scale and contrast.

Currently

Real-time conditions

Frost Probability

Soil Temperature15.3°C

Dew Point10.5°C (moderate dew point)

Wind Speed2.5m/s (calm conditions)

Cloud Cover36%

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in America/New_York

No opportunities in the next 14 days

See which requirements block the most forecast hours below.

Most common blockers (85-hour forecast)

Frost Probability100% of hours
Wind Speed99% of hours
Time Window88% of hours

How this forecast is evaluated

See which weather signals PhotoWeather uses to identify Morning Frost conditions across New England, USA. The requirements and hourly values below show how those signals apply at Bretton Woods.

Explore Morning Frost conditions across New England, USA →

Recorded match history

Completed PhotoWeather forecast matches recorded for this exact rule at Bretton Woods during the last 365 days.

Last 30 days

recorded matching windows

Last 90 days

recorded matching windows

Last 365 days

recorded matching windows · 67% average confidence

Most frequent recorded start hour

06:00 local time, shared by 6 of 18 matches recorded in the last 365 days.

Most represented month

February, with 10 of 18 matches recorded in the last 365 days.

These figures use completed PhotoWeather MatchEvent records from the previous 365 days only. They describe recorded forecast matches, not observations, climatological probability, or a guarantee of future conditions.

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85-hour requirements breakdown

When available, the detailed table below covers only the stated 85-hour horizon (typically 72–168 hours, depending on available hourly data). Opportunity records above span the next 14 days, so this table does not explain that entire 14-day period.

What passed or failed, hour by hour

0matching hours in the next 85 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, Aug 22
01:00	✕	0%	2m/s
02:00	✕	0%	1.9m/s
03:00	✕	0%	1.9m/s
04:00	✕	0%	2m/s
05:00	✓	0%	2.2m/s
06:00	✓	0%	2.2m/s
07:00	✓	0%	2.1m/s
08:00	✕	0%	1.6m/s
09:00	✕	0%	2m/s
10:00	✕	0%	2.5m/s
11:00	✕	0%	2.6m/s
12:00	✕	0%	2.6m/s
13:00	✕	0%	2.8m/s
14:00	✕	0%	2.9m/s
15:00	✕	0%	3m/s
16:00	✕	0%	2.5m/s
17:00	✕	0%	2.1m/s
18:00	✕	0%	2.2m/s
19:00	✕	0%	2.2m/s
20:00	✕	0%	2.4m/s
21:00	✕	0%	2.4m/s
22:00	✕	0%	2.3m/s
23:00	✕	0%	2.3m/s
Sun, Aug 23
24:00	✕	0%	1.9m/s
01:00	✕	0%	2.1m/s
02:00	✕	0%	1.9m/s
03:00	✕	0%	1.6m/s
04:00	✕	0%	1.7m/s
05:00	✓	0%	1.9m/s
06:00	✓	0%	2.2m/s
07:00	✓	0%	1.9m/s
08:00	✕	0%	2.1m/s
09:00	✕	0%	2.4m/s
10:00	✕	0%	2.5m/s
11:00	✕	0%	2.7m/s
12:00	✕	0%	2.7m/s
13:00	✕	0%	3m/s
14:00	✕	0%	2.6m/s
15:00	✕	0%	2.8m/s
16:00	✕	0%	2.5m/s
17:00	✕	0%	2.3m/s
18:00	✕	0%	2m/s
19:00	✕	0%	2.2m/s
20:00	✕	0%	2.1m/s
21:00	✕	0%	1.9m/s
22:00	✕	0%	2m/s
23:00	✕	0%	1.9m/s
Mon, Aug 24
24:00	✕	0%	2m/s
01:00	✕	0%	1.8m/s
02:00	✕	0%	1.7m/s
03:00	✕	0%	1.6m/s
04:00	✕	0%	1.6m/s
05:00	✓	0%	1.6m/s
06:00	✓	0%	1.6m/s
07:00	✓	0%	1.7m/s
08:00	✕	0%	1.1m/s
09:00	✕	0%	1.8m/s
10:00	✕	0%	2.2m/s
11:00	✕	0%	2.6m/s
12:00	✕	0%	2m/s
13:00	✕	0%	2.6m/s
14:00	✕	0%	2.2m/s
15:00	✕	0%	2.5m/s
16:00	✕	0%	3.1m/s
17:00	✕	0%	3.6m/s
18:00	✕	0%	3.6m/s
19:00	✕	0%	1.6m/s
20:00	✕	0%	2.2m/s
21:00	✕	0%	2m/s
22:00	✕	0%	1.8m/s
23:00	✕	0%	1.6m/s
Tue, Aug 25
24:00	✕	0%	1.7m/s
01:00	✕	0%	1.8m/s
02:00	✕	0%	1.9m/s
03:00	✕	0%	1.8m/s
04:00	✕	0%	1.8m/s
05:00	✓	0%	1.7m/s
06:00	✓	0%	1.6m/s
07:00	✓	0%	1.6m/s
08:00	✕	0%	1.6m/s
09:00	✕	0%	1.7m/s
10:00	✕	0%	1.8m/s
11:00	✕	0%	1.9m/s
12:00	✕	0%	1.9m/s
13:00	✕	0%	2m/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
Sat, Aug 22 Sunrise 05:57 Sunset 19:38
16:00	11°C	15°C	18°C	-	36%	0.84kPa
17:00	11°C	15°C	19°C	-	25%	0.87kPa
18:00	12°C	15°C	18°C	-	26%	0.73kPa
19:00	12°C	15°C	16°C	-	23%	0.43kPa
20:00 ☾	11°C	15°C	13°C	-	15%	0.24kPa
21:00 ☾	10°C	15°C	12°C	-	44%	0.18kPa
22:00 ☾	10°C	15°C	12°C	-	60%	0.17kPa
23:00 ☾	10°C	15°C	12°C	-	100%	0.17kPa
Sun, Aug 23 Sunrise 05:58 Sunset 19:37
24:00 ☾	11°C	15°C	13°C	-	100%	0.18kPa
01:00 ☾	12°C	15°C	12°C	-	100%	0.06kPa
02:00 ☾	12°C	15°C	13°C	-	100%	0.05kPa
03:00 ☾	13°C	15°C	14°C	-	100%	0.11kPa
04:00 ☾	13°C	15°C	14°C	-	99%	0.07kPa
05:00 ☾	14°C	14°C	14°C	-	100%	0.07kPa
06:00	14°C	14°C	14°C	-	100%	0.03kPa
07:00	14°C	14°C	15°C	-	100%	0.06kPa
08:00	14°C	14°C	15°C	-	100%	0.1kPa
09:00	14°C	14°C	15°C	-	100%	0.11kPa
10:00	14°C	14°C	15°C	-	100%	0.09kPa
11:00	15°C	14°C	16°C	-	96%	0.1kPa
12:00	15°C	14°C	17°C	-	92%	0.16kPa
13:00	15°C	15°C	17°C	-	75%	0.22kPa
14:00	16°C	15°C	18°C	-	87%	0.25kPa
15:00	16°C	15°C	18°C	-	100%	0.27kPa
16:00	15°C	15°C	17°C	-	100%	0.16kPa
17:00	16°C	15°C	16°C	-	100%	0.08kPa
18:00	15°C	15°C	16°C	-	100%	0.08kPa
19:00	15°C	15°C	16°C	-	90%	0.05kPa
20:00 ☾	15°C	15°C	15°C	-	96%	0.05kPa
21:00 ☾	15°C	15°C	15°C	-	100%	0.02kPa
22:00 ☾	15°C	15°C	15°C	-	99%	0.05kPa
23:00 ☾	15°C	15°C	15°C	-	100%	0.02kPa
Mon, Aug 24 Sunrise 05:59 Sunset 19:35
24:00 ☾	15°C	15°C	15°C	-	100%	0.02kPa
01:00 ☾	15°C	15°C	15°C	-	94%	0.02kPa
02:00 ☾	14°C	15°C	14°C	-	35%	0.02kPa
03:00 ☾	13°C	15°C	13°C	-	19%	0.03kPa
04:00 ☾	13°C	14°C	13°C	-	0%	0.04kPa
05:00 ☾	12°C	14°C	13°C	-	0%	0.05kPa
06:00	12°C	14°C	12°C	-	0%	0.06kPa
07:00	13°C	14°C	13°C	-	0%	0.06kPa
08:00	15°C	14°C	16°C	-	0%	0.15kPa
09:00	14°C	14°C	17°C	-	2%	0.34kPa
10:00	13°C	14°C	18°C	-	0%	0.67kPa
11:00	13°C	14°C	18°C	-	13%	0.53kPa
12:00	13°C	14°C	18°C	-	10%	0.46kPa
13:00	13°C	14°C	18°C	-	26%	0.48kPa
14:00	13°C	15°C	17°C	-	10%	0.52kPa
15:00	13°C	15°C	17°C	-	48%	0.54kPa
16:00	11°C	15°C	18°C	-	4%	0.73kPa
17:00	8.5°C	15°C	18°C	-	2%	1kPa
18:00	8.5°C	15°C	18°C	-	84%	0.92kPa
19:00	9.1°C	15°C	15°C	-	100%	0.5kPa
20:00 ☾	7.8°C	15°C	15°C	-	72%	0.66kPa
21:00 ☾	9°C	15°C	14°C	-	81%	0.42kPa
22:00 ☾	9.9°C	15°C	12°C	-	91%	0.22kPa
23:00 ☾	10°C	15°C	11°C	-	100%	0.05kPa
Tue, Aug 25 Sunrise 06:00 Sunset 19:33
24:00 ☾	11°C	15°C	12°C	-	100%	0.07kPa
01:00 ☾	11°C	14°C	12°C	-	100%	0.1kPa
02:00 ☾	12°C	14°C	13°C	-	100%	0.12kPa
03:00 ☾	12°C	14°C	13°C	-	100%	0.1kPa
04:00 ☾	12°C	14°C	13°C	-	100%	0.08kPa
05:00 ☾	12°C	14°C	13°C	-	100%	0.05kPa
06:00 ☾	12°C	14°C	13°C	-	100%	0.05kPa
07:00	12°C	14°C	13°C	-	100%	0.05kPa
08:00	12°C	14°C	13°C	-	100%	0.05kPa
09:00	12°C	14°C	13°C	-	98%	0.05kPa
10:00	12°C	14°C	13°C	-	96%	0.05kPa
11:00	12°C	14°C	13°C	-	95%	0.04kPa
12:00	12°C	14°C	13°C	-	96%	0.04kPa
13:00	12°C	14°C	12°C	-	98%	0.04kPa
14:00	12°C	14°C	12°C	-	100%	0.04kPa
15:00	12°C	14°C	12°C	-	100%	0.03kPa

How to read: these inputs help produce the derived score; they are not requirements by themselves.

How this forecast is made

Opportunities are threshold-based signals: PhotoWeather checks whether forecast conditions match the rules for a photography scenario. They are planning guidance, not guarantees. Forecasts can change as new model runs arrive, and confidence generally decreases farther into the forecast horizon, so recheck conditions before travelling.

The weather forecast foundation comes through Open-Meteo , which aggregates models from weather agencies. PhotoWeather applies condition-specific thresholds and derived calculations; not every condition uses every model or data input.

How opportunities work → Weather data sources →

Forecast generated

Aug 22, 2026, 7:05 PM UTC

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