Rule Morning Frost

Morning Frost Forecast for Torronsuo, Southern Finland

Torronsuon Kansallispuisto, Kanta-Häme, Finland

A broad raised bog crossed by boardwalks, Torronsuo offers low horizons, patterned pools, isolated pines, and frequent autumn dawn mist.

Currently

Real-time conditions

Frost Probability

Soil Temperature15.3°C

Dew Point3.5°C (low dew point)

Wind Speed3.9m/s (calm conditions)

Cloud Cover29%

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/Helsinki

No opportunities in the next 14 days

See which requirements block the most forecast hours below.

Most common blockers (80-hour forecast)

Frost Probability100% of hours
Time Window88% of hours
Wind Speed76% of hours

How this forecast is evaluated

See which weather signals PhotoWeather uses to identify Morning Frost conditions across Southern Finland. The requirements and hourly values below show how those signals apply at Torronsuo.

Explore Morning Frost conditions across Southern Finland →

Recorded match history

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

Last 30 days

recorded matching windows

Last 90 days

recorded matching windows

Last 365 days

recorded matching windows · 70% average confidence

Only 2 completed matches are recorded in the last 365 days—insufficient history to identify a reliable typical start time or month.

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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80-hour requirements breakdown

When available, the detailed table below covers only the stated 80-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 80 hours

AND logic: all conditions required

Meets requirement

Misses requirement

Time Europe/Helsinki	Time Window Sunrise -45m to +90m	Frost Probability ≥ 60.0%	Wind Speed ≤ 1.5m/s
Tue, Aug 18
07:00	✓	0%	1.6m/s
08:00	✕	0%	1.7m/s
09:00	✕	0%	1.9m/s
10:00	✕	0%	2.1m/s
11:00	✕	0%	2.2m/s
12:00	✕	0%	2.2m/s
13:00	✕	0%	2.3m/s
14:00	✕	0%	2.9m/s
15:00	✕	0%	2.2m/s
16:00	✕	0%	3m/s
17:00	✕	0%	3.9m/s
18:00	✕	0%	3.7m/s
19:00	✕	0%	2.8m/s
20:00	✕	0%	1.9m/s
21:00	✕	0%	1.7m/s
22:00	✕	0%	1.9m/s
23:00	✕	0%	1.8m/s
Wed, Aug 19
24:00	✕	0%	1.7m/s
01:00	✕	0%	1.8m/s
02:00	✕	0%	2m/s
03:00	✕	0%	2.1m/s
04:00	✕	0%	2m/s
05:00	✓	0%	1.9m/s
06:00	✓	0%	1.8m/s
07:00	✓	0%	1.8m/s
08:00	✕	0%	2m/s
09:00	✕	0%	2m/s
10:00	✕	0%	2m/s
11:00	✕	0%	2.2m/s
12:00	✕	0%	2.7m/s
13:00	✕	0%	2.9m/s
14:00	✕	0%	2.8m/s
15:00	✕	0%	3.5m/s
16:00	✕	0%	3.2m/s
17:00	✕	0%	3.4m/s
18:00	✕	0%	3.6m/s
19:00	✕	0%	3.7m/s
20:00	✕	0%	2.9m/s
21:00	✕	0%	1.7m/s
22:00	✕	0%	1.7m/s
23:00	✕	0%	1.9m/s
Thu, Aug 20
24:00	✕	0%	1.8m/s
01:00	✕	0%	1.6m/s
02:00	✕	0%	1.4m/s
03:00	✕	0%	1.2m/s
04:00	✕	0%	1.2m/s
05:00	✓	0%	1.1m/s
06:00	✓	0%	1m/s
07:00	✓	0%	0.55m/s
08:00	✕	0%	0.45m/s
09:00	✕	0%	0.76m/s
10:00	✕	0%	0.77m/s
11:00	✕	0%	0.69m/s
12:00	✕	0%	0.81m/s
13:00	✕	0%	1.2m/s
14:00	✕	0%	0.55m/s
15:00	✕	0%	2.8m/s
16:00	✕	0%	4.1m/s
17:00	✕	0%	3.3m/s
18:00	✕	0%	2.4m/s
19:00	✕	0%	2.6m/s
20:00	✕	0%	3m/s
21:00	✕	0%	3.1m/s
22:00	✕	0%	2.8m/s
23:00	✕	0%	2.5m/s
Fri, Aug 21
24:00	✕	0%	2.2m/s
01:00	✕	0%	2.6m/s
02:00	✕	0%	2.9m/s
03:00	✕	0%	3.3m/s
04:00	✕	0%	3.3m/s
05:00	✓	0%	3.4m/s
06:00	✓	0%	3.4m/s
07:00	✓	0%	3m/s
08:00	✕	0%	2.7m/s
09:00	✕	0%	2.3m/s
10:00	✕	0%	1.8m/s
11:00	✕	0%	1.3m/s
12:00	✕	0%	0.82m/s
13:00	✕	0%	1m/s
14:00	✕	0%	1.3m/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/Helsinki	Dew Point °C	Surface Temperature °C	Temperature °C	Time Window	Total Cloud Coverage %	Vapor Pressure Deficit kPa
Tue, Aug 18 Sunrise 05:43 Sunset 21:13
17:00	3.5°C	15°C	19°C	-	29%	1.4kPa
18:00	4.4°C	15°C	19°C	-	64%	1.3kPa
19:00	6.2°C	16°C	18°C	-	64%	1.1kPa
20:00	7.3°C	16°C	15°C	-	8%	0.71kPa
21:00	7°C	15°C	13°C	-	7%	0.45kPa
22:00 ☾	6.7°C	15°C	11°C	-	2%	0.36kPa
23:00 ☾	6.7°C	15°C	11°C	-	2%	0.29kPa
Wed, Aug 19 Sunrise 05:43 Sunset 21:13
24:00 ☾	7.1°C	14°C	10°C	-	2%	0.22kPa
01:00 ☾	7.2°C	14°C	9.7°C	-	2%	0.19kPa
02:00 ☾	7.2°C	14°C	9.4°C	-	5%	0.17kPa
03:00 ☾	7.2°C	13°C	9°C	-	4%	0.13kPa
04:00 ☾	7.3°C	13°C	8.7°C	-	2%	0.11kPa
05:00 ☾	7.1°C	13°C	8.3°C	-	2%	0.09kPa
06:00	7°C	12°C	8.1°C	-	2%	0.08kPa
07:00	7°C	12°C	9.1°C	-	2%	0.16kPa
08:00	7.1°C	12°C	12°C	-	0%	0.36kPa
09:00	6.7°C	12°C	14°C	-	0%	0.6kPa
10:00	6°C	12°C	16°C	-	0%	0.84kPa
11:00	5.3°C	13°C	17°C	-	0%	1kPa
12:00	5°C	13°C	18°C	-	0%	1.2kPa
13:00	5°C	14°C	19°C	-	18%	1.3kPa
14:00	4.5°C	14°C	19°C	-	100%	1.4kPa
15:00	3.7°C	14°C	18°C	-	100%	1.3kPa
16:00	5.1°C	14°C	17°C	-	60%	1kPa
17:00	4.9°C	15°C	18°C	-	11%	1.2kPa
18:00	4.5°C	15°C	18°C	-	45%	1.2kPa
19:00	5.4°C	15°C	17°C	-	96%	1kPa
20:00	5.8°C	15°C	15°C	-	19%	0.79kPa
21:00	6.1°C	15°C	12°C	-	2%	0.42kPa
22:00 ☾	5.8°C	14°C	10°C	-	5%	0.33kPa
23:00 ☾	5.7°C	14°C	9.4°C	-	5%	0.26kPa
Thu, Aug 20 Sunrise 05:46 Sunset 21:10
24:00 ☾	5.6°C	14°C	8.7°C	-	0%	0.22kPa
01:00 ☾	5.4°C	13°C	8.2°C	-	2%	0.2kPa
02:00 ☾	5.1°C	13°C	7.8°C	-	5%	0.18kPa
03:00 ☾	5°C	12°C	7.4°C	-	43%	0.16kPa
04:00 ☾	4.9°C	12°C	7.3°C	-	100%	0.16kPa
05:00 ☾	4.8°C	12°C	7.3°C	-	56%	0.16kPa
06:00	4.6°C	11°C	7.1°C	-	65%	0.16kPa
07:00	4.8°C	11°C	8.6°C	-	44%	0.26kPa
08:00	5.1°C	11°C	11°C	-	22%	0.45kPa
09:00	4.9°C	11°C	14°C	-	68%	0.7kPa
10:00	4.5°C	12°C	15°C	-	64%	0.92kPa
11:00	4.3°C	12°C	17°C	-	73%	1.1kPa
12:00	4.3°C	13°C	18°C	-	75%	1.3kPa
13:00	4.1°C	13°C	19°C	-	95%	1.4kPa
14:00	4.3°C	14°C	19°C	-	100%	1.4kPa
15:00	6.6°C	14°C	16°C	-	100%	0.82kPa
16:00	8.4°C	14°C	14°C	-	100%	0.45kPa
17:00	9.1°C	14°C	13°C	-	100%	0.3kPa
18:00	9.8°C	14°C	11°C	-	100%	0.12kPa
19:00	9.9°C	13°C	11°C	-	100%	0.12kPa
20:00	9.6°C	13°C	11°C	-	100%	0.13kPa
21:00	9.4°C	13°C	11°C	-	100%	0.14kPa
22:00 ☾	9°C	12°C	10°C	-	68%	0.1kPa
23:00 ☾	8.5°C	11°C	9.4°C	-	36%	0.07kPa
Fri, Aug 21 Sunrise 05:48 Sunset 21:07
24:00 ☾	8°C	10°C	8.5°C	-	4%	0.04kPa
01:00 ☾	9.2°C	10°C	10°C	-	31%	0.09kPa
02:00 ☾	10°C	10°C	12°C	-	57%	0.16kPa
03:00 ☾	12°C	10°C	14°C	-	84%	0.25kPa
04:00 ☾	12°C	11°C	14°C	-	89%	0.21kPa
05:00 ☾	12°C	11°C	14°C	-	95%	0.17kPa
06:00	12°C	11°C	14°C	-	100%	0.14kPa
07:00	12°C	11°C	13°C	-	100%	0.1kPa
08:00	12°C	11°C	13°C	-	100%	0.07kPa
09:00	12°C	12°C	12°C	-	100%	0.03kPa
10:00	12°C	12°C	13°C	-	100%	0.03kPa
11:00	12°C	12°C	13°C	-	100%	0.03kPa
12:00	13°C	12°C	13°C	-	100%	0.02kPa
13:00	12°C	12°C	12°C	-	72%	0.02kPa
14:00	12°C	12°C	12°C	-	45%	0.02kPa
15:00	11°C	12°C	11°C	-	17%	0.03kPa
16:00	11°C	12°C	11°C	-	14%	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 18, 2026, 1:27 PM UTC

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