Rule Morning Frost

Morning Frost Forecast for Björkliden, Swedish Lapland

Björkliden, Norrbotten, Sweden

Björkliden overlooks Torneträsk from birch-covered slopes, with Lapporten and surrounding peaks forming layered lake-and-mountain compositions.

Currently

Real-time conditions

Frost Probability

Soil Temperature10.9°C

Dew Point7.6°C (moderate dew point)

Wind Speed3.3m/s (calm conditions)

Cloud Cover100%

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/Stockholm

No opportunities in the next 14 days

See which requirements block the most forecast hours below.

Most common blockers (74-hour forecast)

Frost Probability100% of hours
Wind Speed94% of hours
Time Window88% of hours

How this forecast is evaluated

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

Explore Morning Frost conditions across Swedish Lapland →

Recorded match history

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

Last 30 days

recorded matching windows

Last 90 days

recorded matching windows

Last 365 days

recorded matching windows · 71% average confidence

Most frequent recorded start hour

06:00 local time, shared by 5 of 12 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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74-hour requirements breakdown

When available, the detailed table below covers only the stated 74-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 74 hours

AND logic: all conditions required

Meets requirement

Misses requirement

Time Europe/Stockholm	Time Window Sunrise -45m to +90m	Frost Probability ≥ 60.0%	Wind Speed ≤ 1.5m/s
Tue, Aug 25
07:00	✕	0%	1.7m/s
08:00	✕	0%	2.2m/s
09:00	✕	0%	3m/s
10:00	✕	0%	3.3m/s
11:00	✕	0%	3.6m/s
12:00	✕	0%	3.9m/s
13:00	✕	0%	3.6m/s
14:00	✕	0%	3.7m/s
15:00	✕	0%	4.1m/s
16:00	✕	0%	4.2m/s
17:00	✕	0%	4.3m/s
18:00	✕	0%	4.6m/s
19:00	✕	0%	4.5m/s
20:00	✕	0%	3.7m/s
21:00	✕	0%	3.3m/s
22:00	✕	0%	2.6m/s
23:00	✕	0%	2.1m/s
Wed, Aug 26
24:00	✕	0%	2.1m/s
01:00	✕	0%	2.1m/s
02:00	✕	0%	2.2m/s
03:00	✕	0%	2.2m/s
04:00	✓	0%	2.2m/s
05:00	✓	0%	2.2m/s
06:00	✓	0%	2.1m/s
07:00	✕	0%	1.7m/s
08:00	✕	0%	1.8m/s
09:00	✕	0%	1.7m/s
10:00	✕	0%	1.6m/s
11:00	✕	0%	1.4m/s
12:00	✕	0%	1.5m/s
13:00	✕	0%	1.5m/s
14:00	✕	0%	1.1m/s
15:00	✕	0%	2.2m/s
16:00	✕	0%	3.1m/s
17:00	✕	0%	3.5m/s
18:00	✕	0%	3.1m/s
19:00	✕	0%	2.8m/s
20:00	✕	0%	2.5m/s
21:00	✕	0%	2.7m/s
22:00	✕	0%	2.6m/s
23:00	✕	0%	2.4m/s
Thu, Aug 27
24:00	✕	0%	2.6m/s
01:00	✕	0%	2.7m/s
02:00	✕	0%	2.6m/s
03:00	✕	0%	2.5m/s
04:00	✓	0%	2.5m/s
05:00	✓	0%	2.4m/s
06:00	✓	0%	2.3m/s
07:00	✕	0%	2.2m/s
08:00	✕	0%	2.7m/s
09:00	✕	0%	2.9m/s
10:00	✕	0%	3.1m/s
11:00	✕	0%	2.6m/s
12:00	✕	0%	3.3m/s
13:00	✕	0%	3.5m/s
14:00	✕	0%	3.8m/s
15:00	✕	0%	4m/s
16:00	✕	0%	3.6m/s
17:00	✕	0%	3.2m/s
18:00	✕	0%	2.9m/s
19:00	✕	0%	3m/s
20:00	✕	0%	3.6m/s
21:00	✕	0%	2.9m/s
22:00	✕	0%	2.2m/s
23:00	✕	0%	1.6m/s
Fri, Aug 28
24:00	✕	0%	1.6m/s
01:00	✕	0%	1.7m/s
02:00	✕	0%	1.8m/s
03:00	✕	0%	2.1m/s
04:00	✓	0%	2.4m/s
05:00	✓	0%	2.8m/s
06:00	✓	0%	3.2m/s
07:00	✕	0%	3.6m/s
08:00	✕	0%	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/Stockholm	Dew Point °C	Surface Temperature °C	Temperature °C	Time Window	Total Cloud Coverage %	Vapor Pressure Deficit kPa
Tue, Aug 25 Sunrise 04:53 Sunset 20:25
10:00	7.6°C	11°C	16°C	-	100%	0.75kPa
11:00	7.9°C	11°C	17°C	-	5%	0.84kPa
12:00	8.1°C	11°C	18°C	-	5%	0.93kPa
13:00	8.1°C	12°C	18°C	-	15%	1kPa
14:00	7.8°C	12°C	19°C	-	45%	1.1kPa
15:00	7.8°C	13°C	19°C	-	81%	1.1kPa
16:00	8.3°C	13°C	18°C	-	89%	0.94kPa
17:00	8.4°C	13°C	17°C	-	18%	0.89kPa
18:00	8.3°C	13°C	17°C	-	38%	0.82kPa
19:00	7.7°C	13°C	15°C	-	6%	0.64kPa
20:00	7°C	13°C	13°C	-	25%	0.49kPa
21:00 ☾	6.5°C	13°C	12°C	-	50%	0.4kPa
22:00 ☾	6.6°C	13°C	11°C	-	40%	0.31kPa
23:00 ☾	6.7°C	12°C	9.6°C	-	22%	0.22kPa
Wed, Aug 26 Sunrise 04:53 Sunset 20:25
24:00 ☾	6.8°C	12°C	9.3°C	-	14%	0.18kPa
01:00 ☾	6.5°C	12°C	8.8°C	-	13%	0.16kPa
02:00 ☾	6.4°C	12°C	8.5°C	-	5%	0.15kPa
03:00 ☾	6.3°C	11°C	8.3°C	-	5%	0.14kPa
04:00 ☾	6.2°C	11°C	8.2°C	-	5%	0.14kPa
05:00	6.1°C	11°C	8.1°C	-	27%	0.14kPa
06:00	6.1°C	11°C	8.5°C	-	60%	0.17kPa
07:00	6.8°C	10°C	10°C	-	67%	0.28kPa
08:00	6.8°C	10°C	12°C	-	25%	0.43kPa
09:00	7°C	11°C	14°C	-	22%	0.56kPa
10:00	7.1°C	11°C	15°C	-	6%	0.68kPa
11:00	7.1°C	11°C	16°C	-	21%	0.79kPa
12:00	7.1°C	12°C	17°C	-	65%	0.88kPa
13:00	7.1°C	12°C	17°C	-	91%	0.94kPa
14:00	6.6°C	12°C	17°C	-	100%	0.95kPa
15:00	8.1°C	12°C	16°C	-	100%	0.7kPa
16:00	8.6°C	12°C	15°C	-	100%	0.56kPa
17:00	8.8°C	13°C	14°C	-	100%	0.5kPa
18:00	8.7°C	13°C	14°C	-	88%	0.44kPa
19:00	8.5°C	13°C	13°C	-	98%	0.39kPa
20:00	8°C	12°C	12°C	-	100%	0.35kPa
21:00 ☾	7.6°C	12°C	12°C	-	91%	0.33kPa
22:00 ☾	7.3°C	12°C	11°C	-	19%	0.3kPa
23:00 ☾	7°C	12°C	8.8°C	-	19%	0.13kPa
Thu, Aug 27 Sunrise 04:56 Sunset 20:21
24:00 ☾	7°C	12°C	8.5°C	-	22%	0.11kPa
01:00 ☾	7.2°C	11°C	8.6°C	-	19%	0.1kPa
02:00 ☾	7.1°C	11°C	8.3°C	-	14%	0.09kPa
03:00 ☾	6.8°C	11°C	8.1°C	-	48%	0.09kPa
04:00 ☾	6.5°C	11°C	7.9°C	-	69%	0.1kPa
05:00 ☾	6.3°C	10°C	8°C	-	53%	0.11kPa
06:00	6.4°C	10°C	8.4°C	-	22%	0.14kPa
07:00	7°C	10°C	10°C	-	5%	0.25kPa
08:00	7.5°C	10°C	12°C	-	25%	0.4kPa
09:00	7.9°C	10°C	14°C	-	52%	0.55kPa
10:00	8.1°C	11°C	15°C	-	100%	0.6kPa
11:00	8.2°C	11°C	13°C	-	92%	0.43kPa
12:00	8.2°C	11°C	15°C	-	70%	0.66kPa
13:00	8.6°C	11°C	18°C	-	75%	0.89kPa
14:00	9.1°C	12°C	18°C	-	100%	0.95kPa
15:00	9.3°C	12°C	18°C	-	100%	0.91kPa
16:00	10°C	12°C	17°C	-	100%	0.74kPa
17:00	10°C	12°C	16°C	-	100%	0.62kPa
18:00	10°C	12°C	16°C	-	100%	0.51kPa
19:00	10°C	13°C	15°C	-	100%	0.44kPa
20:00	9.9°C	13°C	15°C	-	71%	0.43kPa
21:00 ☾	9.9°C	12°C	13°C	-	72%	0.28kPa
22:00 ☾	9.8°C	12°C	12°C	-	73%	0.16kPa
23:00 ☾	9.5°C	11°C	10°C	-	74%	0.06kPa
Fri, Aug 28 Sunrise 05:00 Sunset 20:17
24:00 ☾	10°C	11°C	11°C	-	83%	0.12kPa
01:00 ☾	10°C	11°C	13°C	-	91%	0.2kPa
02:00 ☾	11°C	11°C	14°C	-	100%	0.3kPa
03:00 ☾	11°C	12°C	14°C	-	96%	0.33kPa
04:00 ☾	11°C	12°C	15°C	-	93%	0.36kPa
05:00 ☾	11°C	12°C	15°C	-	89%	0.39kPa
06:00	11°C	12°C	16°C	-	92%	0.53kPa
07:00	10°C	12°C	17°C	-	96%	0.69kPa
08:00	9.7°C	13°C	18°C	-	100%	0.86kPa
09:00	10°C	13°C	18°C	-	68%	0.89kPa

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 25, 2026, 7:29 AM UTC

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