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Underworld Rock
Climbing area · United States
Sandstone: never climbed wet, it breaks.
Is it worth the trip?
68Good out of 100 for your dates
Best on Thu 5: Wet sandstone: do not climb, it breaks when wet, Rock about 18 °C
Tue 3 · 38 out of 100
- Rock
- Wetdo not climb
- Rock temp
- 8°C
- Air
- 14°C
- Rain
- 3.3 mm
Wed 4 · 0 out of 100
- Rock
- Wetdo not climb
- Rock temp
- 10°C
- Air
- 17°C
- Rain
- 0 mm
Thu 5 · 83 out of 100
- Rock
- Wetdo not climb
- Rock temp
- 18°C
- Air
- 20°C
- Rain
- 0 mm
Fri 6 · 80 out of 100
- Rock
- Dry
- Rock temp
- 22°C
- Air
- 22°C
- Rain
- 0 mm
Sat 7 · 70 out of 100
- Rock
- Dry
- Rock temp
- 17°C
- Air
- 23°C
- Rain
- 0 mm
Sun 8 · 73 out of 100
- Rock
- Dry
- Rock temp
- 24°C
- Air
- 25°C
- Rain
- 0 mm
Mon 9 · 74 out of 100
- Rock
- Dry
- Rock temp
- 21°C
- Air
- 23°C
- Rain
- 0 mm
Tap a day for rock, its warmth, the air and rain. Full forecast
Forecast: next 10 days
Full forecast- Mon 247, fair
- Tue 338, poor
- Wed 40, poor
- Thu 583, good
- Fri 680, good
- Sat 770, good
- Sun 873, good
- Mon 974, good
- Tue 1083, good
- Wed 110, poor
The spot in five facts
- 17 cragsmapped within 5 km
- 10 routesstated on the map
- Sandstonenever climbed wet
- Bouldering, sport and tradstyles
- Best May–Aug6 good days in 7
Full forecast
every day, every number
The score doesn't know loose rock, seepage, access bans or your skill.
| Day | Score | Rock | Rock temp | Air | Rain |
|---|---|---|---|---|---|
| Mon 2Nov* | 47, fair | Dry? | 16°C | 19°C | 0 mm |
| Tue 3Nov | 38, poor | Wetdo not climb | 8°C | 14°C | 3.3 mm |
| Wed 4Nov | 0, poor | Wetdo not climb | 10°C | 17°C | 0 mm |
| Thu 5Nov | 83, good | Wetdo not climb | 18°C | 20°C | 0 mm |
| Fri 6Nov | 80, good | Dry | 22°C | 22°C | 0 mm |
| Sat 7Nov | 70, good | Dry | 17°C | 23°C | 0 mm |
| Sun 8Nov | 73, good | Dry | 24°C | 25°C | 0 mm |
| Mon 9Nov | 74, good | Dry | 21°C | 23°C | 0 mm |
| Tue 10Nov | 83, good | Wetdo not climb | 16°C | 15°C | 0.6 mm |
| Wed 11Nov | 0, poor | Wetdo not climb | 13°C | 14°C | 0 mm |
* Rain before today is not known: the forecast starts today, so these days are scored from a dry start and a wet one.
Rock and air are in °C, the rock's with the sun on it; rain in mm. More
Forecast updated . It refreshes every three hours. Forecast data: ECMWF, DWD, Météo-France and NOAA, served by Open-Meteo.com (CC BY 4.0). Changed by us. Generated using E.U. Copernicus Marine Service Information.
Best time to go
best May–Aug
Good climbing days in a typical week, each month, from 2016 on (ERA5 history scored the same way).
- Jan3of 7: a trip from Sat 2 Jan
- Feb4of 7: a trip from Sat 6 Feb
- Mar3of 7: a trip from Sat 6 Mar
- Apr5of 7: a trip from Sat 3 Apr
- May6of 7: a trip from Sat 1 May
- Jun6of 7: a trip from Sat 5 Jun
- Jul6of 7: a trip from Sat 3 Jul
- Aug6of 7: a trip from Sat 7 Aug
- Sep5of 7: a trip from Sat 4 Sept
- Oct5of 7: a trip from Sat 2 Oct
- Nov5of 7: a trip from Tue 3 Nov
- Dec4of 7: a trip from Sat 5 Dec
Tap a month to see this spot for a trip then.
Typical weather, not a forecast.
Map
the area and its town
Underworld Rock on Google Maps · Directions
Each place wears its best day on these dates: green good, amber fair, pale red poor, as the key says.
The map needs JavaScript. Every place on it is listed on this page, and each place's page links to Google Maps.
One finger scrolls the page; two fingers move the map. Pins are our own positions. Map OpenFreeMap, © OpenMapTiles, data © OpenStreetMap contributors.
Photos of Underworld Rock
_-_panoramio.jpg){kind=link}
About
the place in full, sources, credits
About Underworld Rock
17 crags mapped, 10 routes stated. Bouldering, sport and trad. Sandstone: never climbed wet, it breaks. The nearest town to stay in is Saratoga.
- Crags 17 crags mapped, 10 routes stated.
- Styles Bouldering, sport and trad.
- Rock Sandstone: never climbed wet, it breaks.
From OpenStreetMap: the crags mapped within 5 km. Check access and bans locally.
Crags: © OpenStreetMap contributors (ODbL).
The score is the conditions only: the journey, the price and the partners never change it (how we score, how we earn).
Rough cost (estimate): about US$1,130–US$2,100 each
about US$1,130–US$2,100 each · 6 nights, 2 sharing: flights, taxi, stay, food, climbing instructor.
Our estimate from typical public prices, not a quote: check the real prices before you book (where they come from). Prices are about, in US Dollar (USD): our pound figures at the European Central Bank's rate of 30 October 2026.
How we worked it out
| What | How we worked it out | Each |
|---|---|---|
| Flights | return MDW to SJC, estimated from distance and season, 1 airline on the route, with a hold bag | about US$255–US$536 |
| Taxi | airport and back, shared | about US$47–US$80 |
| Stay | 6 nights, a mid-range double, shared | about US$348–US$583 |
| Food | 7 days eating out | about US$342–US$636 |
| Climbing instructor | 1 day with an instructor, shared; leave it out if you climb on your own | about US$141–US$261 |
| Total | about US$1,130–US$2,100 |
Climbers bring their own kit: it is not in the cost. Prices from public sources, checked in 2026.
Where to stay: Saratoga
about 15 min by car · 3 places to stay
about US$134/nightcountry average
About Saratoga its beds, food and every spot near it
About US$134 a night is our estimate of the country's average 2-star double room that month: not each town's price, and not a quote. Drives are estimates. Prices are about, in US Dollar (USD): our pound figures at the European Central Bank's rate of 30 October 2026.
Getting there: about 7h
About 7h door to door from Chicago
Fly MDW → SJC, direct, then 40 min by road
Flights MDW → SJC on your dates · Skyscanner
An estimate, one way; the journey never changes the score.