What are the cycling conditions like in Col du Clergeon?

📆 Accessibility & Opening Periods Typical Cycling Season Roads are generally open daily from early spring to late autumn — roughly April 1 to November 30 — but only when there’s no snow or ice on the road . Some sources say the route is “open all year round” in principle, but always weather-dependent (snow or icy conditions can make it impractical or unsafe in winter). Winter conditions (Dec–Mar): road usually not maintained or snow-plowed — snow/ice likely, making cycling unsafe. 👉 Because this pass is lower than high Alpine passes (e.g., Galibier), it might become rideable earlier in spring and later into autumn if conditions allow, but this varies by year. ☀️ Seasonal Weather Conditions (What to Expect) Spring (March – May) Cool to mild temperatures , cool mornings/evenings near freezing early in season. Snow melt & lingering patches possible in March/April — may delay safe riding especially early spring. Rain is common in spring; roads can be wet and slippery. Summer (June – August) Best cycling conditions overall. Warm temperatures in valleys; cooler at the pass. Afternoon thunderstorms can occur — typical in Jura and Alps. Usually the most reliable window for long rides up Col du Clergeon. Autumn (September – November) Mild early autumn , cooling quickly in October. Rapid weather change possible — rain, fog, early snow at higher elevations nearby. Roads stay open into November mostly, but icy patches possible late in season . Winter (December – February) Snow & ice very likely. Pass generally not cleared for cyclists. Descents can be hazardous due to ice/wet leaves and cold temperatures. 🧭 Weather Patterns Specific to this Pass Area Because Col du Clergeon is in the Jura Mountains (~1,000 m) , weather changes quickly and more often than in lowland valleys. Temperatures typically drop ~6–7°C per 1,000 m of elevation , so conditions at the summit can be noticeably cooler than in the valley. Rain and thunderstorms are more common in late spring, summer, and early autumn afternoons. 🚴♂️ Tips for Cyclists Best months: June–September for the most stable conditions and fewer risks from snow or ice. Shoulder months: April–May and October–November can be fine — but check recent weather and local tourist info before planning. Winter riding: Not recommended due to lack of snow clearing and unsafe road surfaces. 📌 Short Summary Col du Clergeon is a lower-elevation French Jura pass (~979 m) that is typically open for cycling from early April to late November , depending on weather conditions and absence of snow/ice. Summer (June–August) generally offers the most reliable conditions, while spring and late autumn are more variable with cooler temps and possible snow. Winter (Dec–Feb) is usually unsuitable for cycling due to snow and unmaintained roads. Check local forecasts and tourist office updates before planning your ride.

Back to Alpine Passes

Detailed cycling weather forecast for Col du Clergeon. See wind direction, temperature and rain along the entire climb and descent.

✓ Open

Visit alpen-paesse.ch

Pass Information

979m

Elevation

Current status: open

Opening Period: Ganzjährig offen

Wed

26 Aug

cloud

Partly cloudy

N/A — N/A

25° / 17°

Precipitation 0 mm

Humidity 85 %

📆 Accessibility & Opening Periods

Typical Cycling Season

Roads are generally open daily from early spring to late autumn — roughly April 1 to November 30 — but only when there’s no snow or ice on the road.
Some sources say the route is “open all year round” in principle, but always weather-dependent (snow or icy conditions can make it impractical or unsafe in winter).
Winter conditions (Dec–Mar): road usually not maintained or snow-plowed — snow/ice likely, making cycling unsafe.

👉 Because this pass is lower than high Alpine passes (e.g., Galibier), it might become rideable earlier in spring and later into autumn if conditions allow, but this varies by year.

☀️ Seasonal Weather Conditions (What to Expect)

Spring (March – May)

Cool to mild temperatures, cool mornings/evenings near freezing early in season.
Snow melt & lingering patches possible in March/April — may delay safe riding especially early spring.
Rain is common in spring; roads can be wet and slippery.

Summer (June – August)

Best cycling conditions overall. Warm temperatures in valleys; cooler at the pass.
Afternoon thunderstorms can occur — typical in Jura and Alps.
Usually the most reliable window for long rides up Col du Clergeon.

Autumn (September – November)

Mild early autumn, cooling quickly in October.
Rapid weather change possible — rain, fog, early snow at higher elevations nearby.
Roads stay open into November mostly, but icy patches possible late in season.

Winter (December – February)

Snow & ice very likely. Pass generally not cleared for cyclists.
Descents can be hazardous due to ice/wet leaves and cold temperatures.

🧭 Weather Patterns Specific to this Pass Area

Because Col du Clergeon is in the Jura Mountains (~1,000 m), weather changes quickly and more often than in lowland valleys.
Temperatures typically drop ~6–7°C per 1,000 m of elevation, so conditions at the summit can be noticeably cooler than in the valley.
Rain and thunderstorms are more common in late spring, summer, and early autumn afternoons.

🚴‍♂️ Tips for Cyclists

Best months: June–September for the most stable conditions and fewer risks from snow or ice.
Shoulder months: April–May and October–November can be fine — but check recent weather and local tourist info before planning.
Winter riding: Not recommended due to lack of snow clearing and unsafe road surfaces.

📌 Short Summary

Col du Clergeon is a lower-elevation French Jura pass (~979 m) that is typically open for cycling from early April to late November, depending on weather conditions and absence of snow/ice. Summer (June–August) generally offers the most reliable conditions, while spring and late autumn are more variable with cooler temps and possible snow. Winter (Dec–Feb) is usually unsuitable for cycling due to snow and unmaintained roads. Check local forecasts and tourist office updates before planning your ride.

Check weather on own route

Location

Weather Forecast

Next 7 Days

Wed

26 Aug

cloud

Partly cloudy

N/A — N/A

25° / 17°

Precipitation 0 mm

Humidity 85 %

Thu

27 Aug

cloud

Partly cloudy

N/A — N/A

27° / 15°

Precipitation 0 mm

Humidity 89 %

Fri

28 Aug

cloud

Heavy rain

N/A — N/A

19° / 14°

Precipitation 16 mm

Humidity 94 %

Sat

29 Aug

cloud

Overcast

N/A — N/A

19° / 12°

Precipitation 0 mm

Humidity 93 %

Sun

30 Aug

dark_mode

Clear sky

N/A — N/A

22° / 14°

Precipitation 0 mm

Humidity 79 %

Mon

31 Aug

dark_mode

Mainly clear

N/A — N/A

22° / 15°

Precipitation 0 mm

Humidity 87 %

Tue

01 Sep

cloud

Moderate rain

N/A — N/A

20° / 14°

Precipitation 4 mm

Humidity 96 %

Climate Overview

Month	Temp Day	Temp Night	Sunny Days	Sun Hours	Rain Days	Precipitation	Humidity	UV Index	Day Length
Jan	4°C	-2°C	16	5.7h	19	180 mm	75 %	2	9h 9m
Feb	6°C	-2°C	20	7.1h	11	44 mm	73 %	3	10h 23m
Mar	9°C	0°C	27	9.0h	16	82 mm	70 %	4	11h 56m
Apr	13°C	3°C	26	10.5h	15	147 mm	68 %	5	13h 33m
May	16°C	7°C	26	11.2h	17	133 mm	65 %	6	14h 57m
Jun	24°C	14°C	28	13.6h	11	68 mm	67 %	7	15h 39m
Jul	23°C	13°C	31	13.5h	16	92 mm	66 %	8	15h 17m
Aug	24°C	13°C	30	12.2h	9	85 mm	68 %	7	14h 4m
Sep	16°C	9°C	23	8.5h	19	147 mm	70 %	5	12h 30m
Oct	12°C	5°C	22	7.2h	13	176 mm	72 %	4	10h 54m
Nov	7°C	0°C	17	6.2h	14	170 mm	76 %	2	9h 29m
Dec	4°C	-1°C	20	5.9h	11	41 mm	77 %	2	8h 44m