plan a safe trip
Weather, Roads & Emergency
Frosty's trip-safety desk for the Highway 140 gateway to Yosemite. Everything here points to official sources — always confirm with them before you rely on it.
No active National Weather Service alerts for the Mariposa / Yosemite area right now. This is not an all-clear — check the official sources below before you travel.
🌤️ Weather
National Weather Service forecast · updated Oct 17, 2:02 PM Pacific. Full NWS forecast →
Mariposa84°F / 29°C
This Afternoon: Sunny
- TonightClear60° / 16°C
- SundaySunny81° / 27°C
- Sunday NightMostly Clear58° / 14°C
- MondaySunny73° / 23°C
- Monday NightPartly Cloudy53° / 12°C
Yosemite Valley81°F / 27°C
This Afternoon: Sunny
- TonightClear47° / 8°C
- SundaySunny78° / 26°C
- Sunday NightClear46° / 8°C
- MondaySunny73° / 23°C
- Monday NightPartly Cloudy43° / 6°C
🛣️ Road & route conditions
Two jurisdictions: Caltrans manages the state highways up to the park boundary; once you enter Yosemite, the National Park Service does. Check both.
Caltrans — highways to the gateways
- Live map: Caltrans QuickMap
- Hotline: 1-800-427-7623 (1-800-GAS-ROAD)
- From Mariposa: Hwy 140, the low-elevation All-Season Highway — SR-140 status
- From Oakhurst: Hwy 41 north — SR-41 status
- From Coulterville: Hwy 132 → Hwy 120 west — SR-120 status
National Park Service — inside Yosemite
- Road/weather recording: (209)-372-0200 (press 1, then 1)
- Current conditions: nps.gov/yose conditions →
- Seasonal note: chain controls and closures are common Nov–Apr at higher elevations — Hwy 140 stays lowest.
🆘 Emergency contacts
Life-threatening emergency
911Yosemite NP 24-hr dispatch
(209)-379-1992Mariposa County Sheriff (non-emergency)
(209)-966-3615Caltrans road info
1-800-427-7623Yosemite road/weather recording
(209)-372-0200In any emergency, call 911 first. Numbers and links are provided as a courtesy and may change — the issuing agencies are the source of record.