How often do conditions match?

No opportunity windows are predicted in the next 10 days. Conditions can change quickly, so check back for updates.

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Rule Morning Frost

San Gimignano - Morning Frost - Tuscany

Q: What conditions does Morning Frost look for?

Time Window: Sunrise -45m to +90m. Frost Probability: ≥ 60.0%. Wind Speed: ≤ 1.5m/s

San Gimignano, Tuscany, Italy

Frost crystals on calm, cold mornings near sunrise

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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 83% failing

Wind Speed 43% failing

Currently

Real-time conditions

Frost Probability

Soil Temperature11.7°C

Dew Point4.9°C (low dew point)

Wind Speed0.8m/s (calm conditions)

Cloud Cover0%

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/Rome

No opportunities in the next 10 days

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

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72-hour requirements breakdown

What passed or failed, hour by hour

0matching hours in the next 92 hours

AND logic: all conditions required

Meets requirement

Misses requirement

Time Europe/Rome	Time Window Sunrise -45m to +90m	Frost Probability ≥ 60.0%	Wind Speed ≤ 1.5m/s
Wed, Apr 8
06:00	✓	0%	1.3m/s
07:00	✓	0%	1.5m/s
08:00	✓	0%	1.2m/s
09:00	✕	0%	0.86m/s
10:00	✕	0%	0.39m/s
11:00	✕	0%	1.7m/s
12:00	✕	0%	2.5m/s
13:00	✕	0%	3.2m/s
14:00	✕	0%	3.8m/s
15:00	✕	0%	4.2m/s
16:00	✕	0%	4.6m/s
17:00	✕	0%	4.6m/s
18:00	✕	0%	3.5m/s
19:00	✕	0%	2.2m/s
20:00	✕	0%	1.4m/s
21:00	✕	0%	1.4m/s
22:00	✕	0%	1.3m/s
23:00	✕	0%	1.3m/s
Thu, Apr 9
24:00	✕	0%	1.2m/s
01:00	✕	0%	0.99m/s
02:00	✕	0%	1m/s
03:00	✕	0%	0.79m/s
04:00	✕	0%	0.82m/s
05:00	✓	0%	0.7m/s
06:00	✓	0%	0.55m/s
07:00	✓	0%	0.69m/s
08:00	✓	0%	0.97m/s
09:00	✕	0%	0.53m/s
10:00	✕	0%	0.62m/s
11:00	✕	0%	0.66m/s
12:00	✕	0%	1.5m/s
13:00	✕	0%	2m/s
14:00	✕	0%	2.8m/s
15:00	✕	0%	4.1m/s
16:00	✕	0%	4.9m/s
17:00	✕	0%	4.7m/s
18:00	✕	0%	3.8m/s
19:00	✕	0%	2.8m/s
20:00	✕	0%	1.7m/s
21:00	✕	0%	1.4m/s
22:00	✕	0%	1.4m/s
23:00	✕	0%	1.4m/s
Fri, Apr 10
24:00	✕	0%	1.4m/s
01:00	✕	0%	1.6m/s
02:00	✕	0%	1.4m/s
03:00	✕	0%	1.9m/s
04:00	✕	0%	1.2m/s
05:00	✓	0%	1.7m/s
06:00	✓	0%	0.9m/s
07:00	✓	0%	0.9m/s
08:00	✓	0%	1.2m/s
09:00	✕	0%	0.44m/s
10:00	✕	0%	0.61m/s
11:00	✕	0%	0.92m/s
12:00	✕	0%	2.4m/s
13:00	✕	0%	2.7m/s
14:00	✕	0%	2.7m/s
15:00	✕	0%	3.1m/s
16:00	✕	0%	3.3m/s
17:00	✕	0%	3m/s
18:00	✕	0%	2.9m/s
19:00	✕	0%	2.1m/s
20:00	✕	0%	1.3m/s
21:00	✕	0%	0.95m/s
22:00	✕	0%	0.94m/s
23:00	✕	0%	0.79m/s
Sat, Apr 11
24:00	✕	0%	0.47m/s
01:00	✕	0%	0.52m/s
02:00	✕	0%	0.55m/s
03:00	✕	0%	0.55m/s
04:00	✕	0%	0.89m/s
05:00	✓	0%	1m/s
06:00	✓	0%	1.1m/s
07:00	✓	0%	1.2m/s
08:00	✓	0%	0.94m/s
09:00	✕	0%	1.2m/s
10:00	✕	0%	1.5m/s
11:00	✕	0%	1.9m/s
12:00	✕	0%	1.9m/s
13:00	✕	0%	1.9m/s
14:00	✕	0%	2m/s
15:00	✕	0%	1.6m/s
16:00	✕	0%	1.3m/s
17:00	✕	0%	0.96m/s
18:00	✕	0%	1.2m/s
19:00	✕	0%	1.5m/s
20:00	✕	0%	1.8m/s
21:00	✕	0%	1.8m/s
22:00	✕	0%	1.8m/s
23:00	✕	0%	1.8m/s
Sun, Apr 12
24:00	✕	0%	1.6m/s
01:00	✕	0%	1.4m/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/Rome	Dew Point °C	Surface Temperature °C	Temperature °C	Time Window	Total Cloud Coverage %	Vapor Pressure Deficit kPa
Thu, Apr 9 Sunrise 06:44 Sunset 19:51
04:00 ☾	4.9°C	12°C	8.8°C	-	0%	0.26kPa
05:00 ☾	5.2°C	11°C	8.6°C	-	0%	0.24kPa
06:00 ☾	5.2°C	11°C	8.3°C	-	0%	0.21kPa
07:00	5°C	11°C	8.3°C	-	0%	0.22kPa
08:00	6.4°C	11°C	11°C	-	0%	0.33kPa
09:00	7°C	11°C	13°C	-	0%	0.49kPa
10:00	7.7°C	11°C	15°C	-	0%	0.68kPa
11:00	8.1°C	12°C	17°C	-	0%	0.9kPa
12:00	8.1°C	13°C	19°C	-	0%	1.1kPa
13:00	8.2°C	13°C	20°C	-	0%	1.2kPa
14:00	8.8°C	14°C	20°C	-	0%	1.3kPa
15:00	9.3°C	14°C	21°C	-	1%	1.3kPa
16:00	9.2°C	15°C	20°C	-	2%	1.2kPa
17:00	8.3°C	15°C	19°C	-	0%	1.1kPa
18:00	9.1°C	15°C	18°C	-	0%	0.94kPa
19:00	9.6°C	15°C	16°C	-	0%	0.61kPa
20:00 ☾	7.9°C	15°C	13°C	-	0%	0.42kPa
21:00 ☾	7.5°C	15°C	12°C	-	2%	0.34kPa
22:00 ☾	7.4°C	14°C	11°C	-	0%	0.27kPa
23:00 ☾	7.5°C	14°C	10°C	-	2%	0.22kPa
Fri, Apr 10 Sunrise 06:44 Sunset 19:51
24:00 ☾	7.5°C	14°C	10°C	-	5%	0.19kPa
01:00 ☾	7.5°C	13°C	9.9°C	-	3%	0.18kPa
02:00 ☾	7.5°C	13°C	9.7°C	-	5%	0.17kPa
03:00 ☾	7.5°C	13°C	9.7°C	-	2%	0.16kPa
04:00 ☾	7.4°C	12°C	9.4°C	-	4%	0.15kPa
05:00 ☾	7.4°C	12°C	9.3°C	-	5%	0.14kPa
06:00 ☾	7.2°C	12°C	9°C	-	5%	0.13kPa
07:00	7.3°C	11°C	9.1°C	-	5%	0.13kPa
08:00	8.5°C	11°C	11°C	-	5%	0.22kPa
09:00	9.4°C	12°C	14°C	-	75%	0.38kPa
10:00	10°C	12°C	16°C	-	100%	0.54kPa
11:00	10°C	12°C	17°C	-	46%	0.7kPa
12:00	10°C	13°C	18°C	-	78%	0.87kPa
13:00	10°C	14°C	19°C	-	100%	0.99kPa
14:00	11°C	14°C	20°C	-	100%	1.1kPa
15:00	10°C	15°C	20°C	-	100%	1.1kPa
16:00	10°C	15°C	20°C	-	100%	1.1kPa
17:00	9.7°C	15°C	20°C	-	100%	1.1kPa
18:00	11°C	15°C	19°C	-	100%	0.84kPa
19:00	11°C	15°C	16°C	-	96%	0.56kPa
20:00 ☾	9.2°C	15°C	14°C	-	100%	0.42kPa
21:00 ☾	8.6°C	15°C	13°C	-	97%	0.4kPa
22:00 ☾	8.2°C	15°C	12°C	-	72%	0.34kPa
23:00 ☾	7.9°C	14°C	12°C	-	100%	0.3kPa
Sat, Apr 11 Sunrise 06:42 Sunset 19:52
24:00 ☾	7.6°C	14°C	11°C	-	70%	0.29kPa
01:00 ☾	7.3°C	14°C	11°C	-	49%	0.27kPa
02:00 ☾	7.1°C	13°C	10°C	-	59%	0.25kPa
03:00 ☾	6.9°C	13°C	10°C	-	99%	0.24kPa
04:00 ☾	6.8°C	13°C	10°C	-	81%	0.24kPa
05:00 ☾	6.6°C	12°C	9.8°C	-	98%	0.23kPa
06:00 ☾	6.4°C	12°C	9.8°C	-	99%	0.25kPa
07:00	6.4°C	12°C	9.8°C	-	84%	0.25kPa
08:00	7.4°C	12°C	12°C	-	7%	0.36kPa
09:00	8.9°C	13°C	15°C	-	32%	0.57kPa
10:00	10°C	15°C	18°C	-	57%	0.85kPa
11:00	11°C	16°C	21°C	-	82%	1.2kPa
12:00	12°C	17°C	19°C	-	88%	0.87kPa
13:00	12°C	17°C	17°C	-	94%	0.58kPa
14:00	12°C	17°C	15°C	-	100%	0.35kPa
15:00	11°C	16°C	14°C	-	71%	0.28kPa
16:00	11°C	16°C	13°C	-	42%	0.22kPa
17:00	10°C	16°C	12°C	-	12%	0.16kPa
18:00	10°C	15°C	12°C	-	23%	0.16kPa
19:00	10°C	15°C	12°C	-	34%	0.15kPa
20:00 ☾	10°C	15°C	12°C	-	45%	0.15kPa
21:00 ☾	10°C	14°C	12°C	-	56%	0.14kPa
22:00 ☾	9.9°C	14°C	11°C	-	67%	0.13kPa
23:00 ☾	9.7°C	14°C	11°C	-	78%	0.12kPa
Sun, Apr 12 Sunrise 06:40 Sunset 19:53
24:00 ☾	10°C	14°C	12°C	-	85%	0.14kPa
01:00 ☾	10°C	13°C	12°C	-	93%	0.17kPa
02:00 ☾	11°C	13°C	13°C	-	100%	0.2kPa
03:00 ☾	11°C	13°C	15°C	-	100%	0.33kPa

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

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