Lago di Fiastra weather
Lago di Fiastra weather should be read with the location of the reservoir in mind. Lago di Fiastra (Lake Fiastra) is not in the high mountains: it lies at the foot of the Sibillini Mountains, on the Marche side of the National Park, and San Lorenzo al Lago, the hamlet on the shore, is at an elevation of 653 m. The lake is an artificial reservoir created in the 1950s with the dam on the Fiastrone River, and it is the largest hydroelectric reservoir in Le Marche.
In summer Lago di Fiastra draws people looking for cool fresh water away from the coast. In winter snow can reach the shores, but it does not always stay.
Today in Lago di Fiastra: cloudy, high 15 °C and low 12 °C, wind up to 26 km/h.
Updated: November 11, 2026 at 12:21 PM
The coming days
| Day | Sky | High / low | Rain | Max wind |
|---|---|---|---|---|
| Today 11 Nov | Cloudy | 15° / 12° | 0.0 mm | 26 km/h SW |
| Thursday 12 Nov | Light showers | 17° / 11° | 3.8 mm | 31 km/h SW |
| Friday 13 Nov | Heavy rain | 13° / 9° | 20.8 mm | 33 km/h SW |
| Saturday 14 Nov | Cloudy | 8° / 4° | 5.8 mm | 12 km/h N |
| Sunday 15 Nov | Rain | 11° / 5° | 5.6 mm | 7 km/h SW |
| Monday 16 Nov | Rain | 12° / 8° | 17.3 mm | 16 km/h SW |
| Tuesday 17 Nov | Cloudy | 13° / 8° | 1.2 mm | 17 km/h SW |
| Wednesday 18 Nov | Mostly clear | 12° / 8° | 11.9 mm | 22 km/h SW |
| Thursday 19 Nov | Rain | 11° / 7° | 8.1 mm | 23 km/h SW |
| Friday 20 Nov | Mostly clear | 11° / 6° | 0.3 mm | 28 km/h SW |
Forecast by MET Norway, updated automatically · license CC BY 4.0
Sunrise and sunset
- Sunrise
- 06:54
- Sunset
- 16:47
Calculated for this page's coordinates, Italian time.
The next 24 hours
- 1315°0.0 mm22 SW
- 1415°0.0 mm21 SW
- 1515°0.0 mm21 SW
- 1614°0.0 mm22 SW
- 1713°0.0 mm22 SW
- 1813°0.0 mm22 SW
- 1912°0.0 mm24 SW
- 2012°0.0 mm25 SW
- 2112°0.0 mm26 SW
- 2212°0.0 mm26 SW
- 2312°0.0 mm26 SW
- 0013°0.0 mm25 SW
- 0113°0.0 mm25 SW
- 0213°0.0 mm26 SW
- 0313°0.0 mm25 SW
- 0413°0.0 mm20 S
- 0512°0.0 mm18 S
- 0612°0.5 mm17 S
- 0711°0.3 mm14 S
- 0811°0.0 mm12 S
- 0913°0.0 mm13 S
- 1014°0.3 mm14 S
- 1115°0.2 mm15 S
- 1215°0.0 mm16 S
Lago di Fiastra weather: forecast for the coming days
The forecast for the coming days is mainly useful for choosing between the beach and a hike. Heat reaches the lake too: during heat waves, highs climb considerably. At night, thermal winds naturally cool the valleys around the lake.
The trail to the Lame Rosse starts from the dam. When checking Lame Rosse weather, pay close attention to the middle of the day, because in midsummer the final stretch is dry and exposed to the sun. For the main town of the municipality there is the Fiastra weather page. An overview of the whole area is on the Sibillini Mountains Weather page.
Lago di Fiastra weather: the climate month by month
In Le Marche, January is generally the coldest month and July the hottest. In the municipality of Fiastra, July and August are the warmest and driest months. In September temperatures drop and rainfall increases.
In the swimming area of San Lorenzo al Lago, average precipitation is abundant, with a smaller share in summer. The water level changes with the seasons: it is lower in winter and spring, while in summer it is kept higher and steady.
Lago di Fiastra weather: snow and conditions
Snow at Lago di Fiastra is possible but not guaranteed. Because of the low elevation, the lakeshore is not always covered by enough snow. When it snows down to the valley floor, though, the landscape changes: on March 18, 2026 a thin white layer covered the whole lake area and the Fiastrone valley.
With enough snow, the snowshoe walk along the lake starts from San Lorenzo al Lago, out and back on the same route. It is about 6 km, with 50 m of elevation gain and 2 to 2 and a quarter hours of walking, with an easy difficulty grade. The route is not waymarked but is easy to follow. Clothing suited to snow is needed, and it is better to go in a group; beginners can rely on a guide. For outings at higher elevations, check the Sibillini avalanche bulletin (bollettino valanghe).
Between late May and June 2026 the lake level was lowered by about 8 meters for maintenance and waterproofing work on the Fiastrone dam. This brought to light the remains of the old village of San Lorenzo al Fiume, with its stone bridge. Swimming, fishing and canoeing remained possible.