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Rule Morning Frost

Morning Frost Forecast for Nuuksio, Southern Finland

Nuuksio, Uusimaa, Finland

Small forest lakes, granite outcrops, and mixed spruce and birch woodland create enclosed reflections and layered morning mist near Helsinki.

Currently

Real-time conditions
Soil Temperature16.0°C
Dew Point5.7°C (moderate dew point)
Wind Speed0.7m/s (calm conditions)
Cloud Cover32%

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 (81-hour forecast)

  • Frost Probability100% of hours
  • Wind Speed90% of hours
  • Time Window86% 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 Nuuksio.

Explore Morning Frost conditions across Southern Finland →

Recorded match history

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

Last 30 days
0
recorded matching windows
Last 90 days
0
recorded matching windows
Last 365 days
0
recorded matching windows

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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81-hour requirements breakdown

When available, the detailed table below covers only the stated 81-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 81 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
07:000%1.4m/s
08:000%1.5m/s
09:000%1.7m/s
10:000%1.8m/s
11:000%2.1m/s
12:000%2.2m/s
13:000%2.4m/s
14:000%2.2m/s
15:000%2.7m/s
16:000%1.8m/s
17:000%0.75m/s
18:000%1.6m/s
19:000%2.7m/s
20:000%2.6m/s
21:000%2.1m/s
22:000%2.2m/s
23:000%2.2m/s
Wed, Aug 19
24:000%2.3m/s
01:000%2.2m/s
02:000%2.1m/s
03:000%2.1m/s
04:000%2.2m/s
05:000%2.2m/s
06:000%2.4m/s
07:000%2.2m/s
08:000%2.6m/s
09:000%2.7m/s
10:000%2.8m/s
11:000%3.1m/s
12:000%3.2m/s
13:000%3.1m/s
14:000%3.1m/s
15:000%3.5m/s
16:000%5m/s
17:000%5.2m/s
18:000%4.7m/s
19:000%4.4m/s
20:000%3.7m/s
21:000%2.5m/s
22:000%2.3m/s
23:000%2.2m/s
Thu, Aug 20
24:000%2.2m/s
01:000%2m/s
02:000%1.9m/s
03:000%1.9m/s
04:000%1.6m/s
05:000%1.3m/s
06:000%1.1m/s
07:000%0.91m/s
08:000%0.74m/s
09:000%0.79m/s
10:000%1.1m/s
11:000%1.6m/s
12:000%2m/s
13:000%2.8m/s
14:000%3.4m/s
15:000%3m/s
16:000%1.5m/s
17:000%1.6m/s
18:000%1.8m/s
19:000%1.6m/s
20:000%2.2m/s
21:000%2.5m/s
22:000%2.2m/s
23:000%2m/s
Fri, Aug 21
24:000%1.8m/s
01:000%2.2m/s
02:000%2.6m/s
03:000%2.9m/s
04:000%3.1m/s
05:000%3.2m/s
06:000%3.4m/s
07:000%3.3m/s
08:000%3.2m/s
09:000%3m/s
10:000%2.9m/s
11:000%2.8m/s
12:000%2.7m/s
13:000%2.4m/s
14:000%2.1m/s
15:000%1.9m/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
Europe/Helsinki
Dew Point
°C
Surface Temperature
°C
Temperature
°C
Time Window
Total Cloud Coverage
%
Vapor Pressure Deficit
kPa
Tue, Aug 18 Sunrise 05:41 Sunset 21:07
17:00
5.7°C 16°C 19°C - 32% 1.3kPa
18:00
4.4°C 16°C 20°C - 83% 1.5kPa
19:00
5.1°C 16°C 19°C - 75% 1.3kPa
20:00
5.4°C 16°C 16°C - 7% 0.97kPa
21:00
5.4°C 16°C 13°C - 5% 0.64kPa
22:00
5.4°C 16°C 12°C - 5% 0.51kPa
23:00
5.7°C 15°C 11°C - 5% 0.41kPa
Wed, Aug 19 Sunrise 05:41 Sunset 21:07
24:00
6.2°C 15°C 10°C - 4% 0.32kPa
01:00
6.9°C 15°C 9.9°C - 1% 0.22kPa
02:00
7.3°C 14°C 9.4°C - 1% 0.16kPa
03:00
7.3°C 14°C 9°C - 4% 0.13kPa
04:00
7.3°C 14°C 8.9°C - 4% 0.12kPa
05:00
7.2°C 13°C 8.7°C - 4% 0.11kPa
06:00
7°C 13°C 8.5°C - 0% 0.11kPa
07:00
7.1°C 13°C 9.6°C - 0% 0.19kPa
08:00
7.3°C 13°C 12°C - 0% 0.41kPa
09:00
7°C 13°C 14°C - 0% 0.65kPa
10:00
6.2°C 13°C 16°C - 0% 0.9kPa
11:00
5.2°C 13°C 18°C - 0% 1.1kPa
12:00
4.4°C 14°C 19°C - 0% 1.3kPa
13:00
4.2°C 14°C 20°C - 5% 1.5kPa
14:00
4.4°C 15°C 20°C - 20% 1.6kPa
15:00
4°C 15°C 21°C - 28% 1.6kPa
16:00
3.9°C 16°C 21°C - 6% 1.6kPa
17:00
3.6°C 16°C 20°C - 4% 1.5kPa
18:00
3.7°C 16°C 19°C - 5% 1.4kPa
19:00
3.8°C 16°C 18°C - 5% 1.3kPa
20:00
3.9°C 16°C 16°C - 7% 1kPa
21:00
4.2°C 16°C 13°C - 7% 0.66kPa
22:00
4.5°C 16°C 11°C - 9% 0.47kPa
23:00
4.9°C 15°C 10°C - 10% 0.39kPa
Thu, Aug 20 Sunrise 05:44 Sunset 21:04
24:00
5.2°C 15°C 9.7°C - 0% 0.32kPa
01:00
5.3°C 14°C 9.1°C - 2% 0.27kPa
02:00
5.3°C 14°C 8.9°C - 20% 0.24kPa
03:00
5.2°C 14°C 8.6°C - 100% 0.23kPa
04:00
5°C 13°C 8.6°C - 99% 0.25kPa
05:00
4.9°C 13°C 8.5°C - 79% 0.25kPa
06:00
4.6°C 13°C 8.2°C - 98% 0.24kPa
07:00
4.8°C 12°C 9.6°C - 10% 0.34kPa
08:00
4.7°C 12°C 12°C - 36% 0.56kPa
09:00
4.6°C 12°C 15°C - 98% 0.83kPa
10:00
4.1°C 13°C 16°C - 100% 0.99kPa
11:00
3.7°C 13°C 17°C - 45% 1.2kPa
12:00
3.5°C 14°C 19°C - 74% 1.4kPa
13:00
3.6°C 14°C 19°C - 100% 1.4kPa
14:00
5.4°C 14°C 16°C - 100% 0.93kPa
15:00
9°C 14°C 12°C - 100% 0.3kPa
16:00
11°C 14°C 12°C - 100% 0.09kPa
17:00
11°C 14°C 12°C - 100% 0.07kPa
18:00
12°C 14°C 12°C - 100% 0.06kPa
19:00
11°C 14°C 12°C - 100% 0.05kPa
20:00
11°C 13°C 12°C - 100% 0.07kPa
21:00
11°C 13°C 12°C - 100% 0.1kPa
22:00
9.3°C 13°C 10°C - 68% 0.08kPa
23:00
8.1°C 12°C 9°C - 37% 0.06kPa
Fri, Aug 21 Sunrise 05:46 Sunset 21:01
24:00
6.9°C 11°C 7.6°C - 5% 0.05kPa
01:00
8.3°C 11°C 9.7°C - 26% 0.11kPa
02:00
9.7°C 11°C 12°C - 47% 0.19kPa
03:00
11°C 11°C 14°C - 69% 0.28kPa
04:00
11°C 11°C 14°C - 79% 0.26kPa
05:00
12°C 11°C 14°C - 90% 0.23kPa
06:00
12°C 12°C 14°C - 100% 0.2kPa
07:00
12°C 12°C 14°C - 100% 0.15kPa
08:00
12°C 12°C 13°C - 100% 0.09kPa
09:00
12°C 12°C 12°C - 100% 0.04kPa
10:00
12°C 12°C 12°C - 100% 0.03kPa
11:00
12°C 12°C 12°C - 100% 0.03kPa
12:00
12°C 12°C 12°C - 100% 0.03kPa
13:00
12°C 12°C 12°C - 76% 0.03kPa
14:00
12°C 12°C 12°C - 53% 0.03kPa
15:00
12°C 12°C 12°C - 29% 0.03kPa
16:00
11°C 12°C 11°C - 30% 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.

Forecast generated

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