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Rule Morning Frost

Morning Frost Forecast for Inari, Finnish Lapland

Inari, Lapland, Finland

Lake Inari supplies island-dotted horizons, winter ice patterns, and dark northern skies; autumn mist often separates the wooded shores at dawn.

Currently

Real-time conditions
Soil Temperature10.7°C
Dew Point6.6°C (moderate dew point)
Wind Speed1.9m/s (calm conditions)
Cloud Cover100%

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 (95-hour forecast)

  • Frost Probability100% of hours
  • Time Window88% of hours
  • Wind Speed75% of hours

How this forecast is evaluated

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

Explore Morning Frost conditions across Finnish Lapland →

Recorded match history

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

Last 30 days
0
recorded matching windows
Last 90 days
0
recorded matching windows
Last 365 days
10
recorded matching windows · 62% average confidence
Most frequent recorded start hour

07:00 local time, shared by 4 of 10 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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95-hour requirements breakdown

When available, the detailed table below covers only the stated 95-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 95 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
Sun, Aug 23
05:000%2.3m/s
06:000%2.2m/s
07:000%2.3m/s
08:000%2.8m/s
09:000%2.9m/s
10:000%2.9m/s
11:000%2.9m/s
12:000%3.1m/s
13:000%3.4m/s
14:000%3.5m/s
15:000%3.3m/s
16:000%3.1m/s
17:000%3.1m/s
18:000%2.8m/s
19:000%2.3m/s
20:000%1.9m/s
21:000%1.7m/s
22:000%1.6m/s
23:000%2m/s
Mon, Aug 24
24:000%2.1m/s
01:000%2.3m/s
02:000%2.6m/s
03:000%2.7m/s
04:000%2m/s
05:000%2.2m/s
06:000%1.9m/s
07:000%1.5m/s
08:000%2m/s
09:000%2.1m/s
10:000%1.2m/s
11:000%0.35m/s
12:000%1.3m/s
13:000%1.9m/s
14:000%2.3m/s
15:000%2.8m/s
16:000%2.8m/s
17:000%2.6m/s
18:000%2.3m/s
19:000%1m/s
20:000%0.22m/s
21:000%0.76m/s
22:000%1.2m/s
23:000%1.2m/s
Tue, Aug 25
24:000%1.8m/s
01:000%2.1m/s
02:000%2.1m/s
03:000%2m/s
04:000%2.5m/s
05:000%2.9m/s
06:000%2.5m/s
07:000%2.3m/s
08:000%2.9m/s
09:000%3m/s
10:000%2.9m/s
11:000%3m/s
12:000%2.9m/s
13:000%3.6m/s
14:000%3m/s
15:000%3.6m/s
16:000%4.8m/s
17:000%4.6m/s
18:000%6m/s
19:000%6.9m/s
20:000%6.3m/s
21:000%5.8m/s
22:000%4.1m/s
23:000%3.2m/s
Wed, Aug 26
24:000%2.4m/s
01:000%2.2m/s
02:000%2.7m/s
03:000%2.4m/s
04:000%3m/s
05:000%2.9m/s
06:000%2.1m/s
07:000%2.9m/s
08:000%4.1m/s
09:000%5m/s
10:000%5.1m/s
11:000%5m/s
12:000%4.9m/s
13:000%4.8m/s
14:000%4.5m/s
15:000%4.3m/s
16:000%3.4m/s
17:000%2.4m/s
18:000%1.4m/s
19:004.4%1.4m/s
20:003.6%1.5m/s
21:003.6%1.5m/s
22:003.6%1.4m/s
23:003.6%1.3m/s
Thu, Aug 27
24:0037%1.3m/s
01:0045%1.2m/s
02:0050%1m/s
03:0054%0.91m/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
Mon, Aug 24 Sunrise 05:01 Sunset 21:24
06:00
6.6°C 11°C 8.4°C - 100% 0.13kPa
07:00
6.4°C 10°C 8.9°C - 77% 0.18kPa
08:00
5.8°C 10°C 9.3°C - 33% 0.25kPa
09:00
5.4°C 10°C 10°C - 94% 0.36kPa
10:00
5.5°C 10°C 11°C - 100% 0.37kPa
11:00
5.7°C 10°C 11°C - 81% 0.39kPa
12:00
6.3°C 11°C 12°C - 100% 0.45kPa
13:00
6.7°C 11°C 12°C - 100% 0.41kPa
14:00
7.1°C 11°C 13°C - 100% 0.45kPa
15:00
7°C 11°C 13°C - 100% 0.54kPa
16:00
6.9°C 11°C 14°C - 88% 0.55kPa
17:00
6.9°C 11°C 14°C - 88% 0.6kPa
18:00
7.1°C 11°C 14°C - 100% 0.56kPa
19:00
7.5°C 11°C 12°C - 100% 0.37kPa
20:00
7.7°C 11°C 12°C - 100% 0.35kPa
21:00
7.5°C 11°C 11°C - 100% 0.29kPa
22:00
7.4°C 11°C 11°C - 100% 0.29kPa
23:00
7.5°C 11°C 11°C - 100% 0.29kPa
Tue, Aug 25 Sunrise 05:01 Sunset 21:24
24:00
7.5°C 11°C 11°C - 100% 0.29kPa
01:00
7.5°C 11°C 11°C - 92% 0.27kPa
02:00
7.4°C 11°C 11°C - 100% 0.27kPa
03:00
7.2°C 11°C 11°C - 100% 0.29kPa
04:00
7°C 11°C 11°C - 100% 0.33kPa
05:00
7.3°C 11°C 11°C - 100% 0.31kPa
06:00
7.7°C 11°C 11°C - 100% 0.27kPa
07:00
7.8°C 11°C 11°C - 100% 0.29kPa
08:00
7.9°C 11°C 12°C - 100% 0.38kPa
09:00
7.6°C 11°C 12°C - 100% 0.37kPa
10:00
7.7°C 11°C 13°C - 100% 0.41kPa
11:00
7.5°C 11°C 13°C - 100% 0.49kPa
12:00
7.6°C 11°C 13°C - 100% 0.49kPa
13:00
7.9°C 11°C 14°C - 100% 0.57kPa
14:00
7.8°C 11°C 13°C - 98% 0.44kPa
15:00
7.7°C 11°C 15°C - 52% 0.65kPa
16:00
7.7°C 12°C 16°C - 40% 0.76kPa
17:00
8.5°C 12°C 15°C - 25% 0.62kPa
18:00
8.8°C 12°C 14°C - 64% 0.41kPa
19:00
7.3°C 12°C 12°C - 76% 0.37kPa
20:00
6.8°C 12°C 11°C - 86% 0.34kPa
21:00
6.4°C 12°C 11°C - 81% 0.34kPa
22:00
6.9°C 12°C 10°C - 78% 0.24kPa
23:00
6°C 11°C 8.9°C - 96% 0.2kPa
Wed, Aug 26 Sunrise 05:05 Sunset 21:19
24:00
4.8°C 11°C 8.4°C - 89% 0.24kPa
01:00
4.5°C 11°C 7.4°C - 96% 0.19kPa
02:00
3.6°C 11°C 7.7°C - 74% 0.26kPa
03:00
2.5°C 10°C 6.5°C - 84% 0.24kPa
04:00
1.9°C 10°C 6.8°C - 100% 0.29kPa
05:00
1.8°C 10°C 6.5°C - 66% 0.27kPa
06:00
1.7°C 9.7°C 5.6°C - 45% 0.22kPa
07:00
1.1°C 9.4°C 5.7°C - 28% 0.25kPa
08:00
-0.7°C 9.2°C 6.1°C - 8% 0.36kPa
09:00
-1.1°C 9.1°C 7°C - 30% 0.44kPa
10:00
-1.3°C 9°C 7.7°C - 41% 0.49kPa
11:00
-1.5°C 9.1°C 8.6°C - 38% 0.57kPa
12:00
-1.5°C 9.2°C 9.4°C - 50% 0.64kPa
13:00
-1.6°C 9.4°C 10°C - 65% 0.68kPa
14:00
-1.5°C 9.6°C 11°C - 66% 0.73kPa
15:00
-1.5°C 9.8°C 11°C - 39% 0.75kPa
16:00
-0.5°C 9.2°C 8.3°C - 27% 0.5kPa
17:00
-0.2°C 8.6°C 5.6°C - 16% 0.31kPa
18:00
-0.5°C 8.1°C 2.9°C - 5% 0.17kPa
19:00
-0.6°C 7.7°C 2.7°C - 4% 0.15kPa
20:00
-0.6°C 7.3°C 2.4°C - 2% 0.14kPa
21:00
-0.7°C 7°C 2.1°C - 1% 0.13kPa
22:00
-0.8°C 6.6°C 2°C - 1% 0.13kPa
23:00
-0.9°C 6.3°C 1.9°C - 0% 0.13kPa
Thu, Aug 27 Sunrise 05:09 Sunset 21:15
24:00
-0.9°C 6°C 1.9°C - 0% 0.13kPa
01:00
-0.6°C 6°C 3.5°C - 2% 0.2kPa
02:00
-0.4°C 6°C 5.2°C - 3% 0.29kPa
03:00
-0.5°C 6°C 6.8°C - 5% 0.4kPa
04:00
-0.3°C 6.4°C 8°C - 5% 0.48kPa
05:00
-0.2°C 6.8°C 9.2°C - 5% 0.56kPa
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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