1st Bridge to Whalen Summit – Weather Forecast
Category HCMt Shasta, California, US
This page shows a route-based weather forecast for the 1st Bridge to Whalen Summit cycling climb in Mt Shasta, California, US. Unlike a simple location forecast, conditions are calculated at every point along the climb — from the base to the summit — using the actual route profile and elevation data.
You'll see hour-by-hour temperature, wind speed and direction, precipitation probability, and cloud cover adjusted for altitude. Choose your planned departure time to align the forecast with your ride.
1st Bridge to Whalen Summit
Plan Your Ride
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Calculating weather along route...
Trip Summary
Forecast A
Trip Summary A
Forecast B
Trip Summary B
Weather Display Options
Forecast A - Route Map
Forecast B - Route Map
Compare Reversed Route
Same departure time & speed — opposite direction
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← Reversed Direction
Creates a new saved route in the reversed direction
Route Map
Elevation Profile
Temperature Along Route
Precipitation & Precipitation Probability Along Route
Wind Along Route
Humidity Along Route
Pollen Along Route
UV Index Along Route
Start place details
Weather Forecast
Hourly around Sun 06 Sep 17:45
Climate Overview
| Month |
Temp Day
|
Temp Night
|
Sunny Days
|
Sun Hours
|
Rain Days
|
Precipitation
|
Humidity
|
UV Index
|
Day Length
|
|---|---|---|---|---|---|---|---|---|---|
| Jan | 11°C | -1°C | 26 | 7.6h | 5 | 89 mm | 75 % | 2 | 9h 37m |
| Feb | 9°C | -2°C | 14 | 5.5h | 16 | 358 mm | 73 % | 3 | 10h 40m |
| Mar | 11°C | 1°C | 20 | 7.1h | 19 | 339 mm | 70 % | 4 | 11h 59m |
| Apr | 18°C | 3°C | 28 | 11.7h | 10 | 66 mm | 68 % | 5 | 13h 21m |
| May | 25°C | 9°C | 31 | 13.6h | 5 | 15 mm | 65 % | 6 | 14h 31m |
| Jun | 31°C | 14°C | 30 | 14.3h | 3 | 3 mm | 67 % | 7 | 15h 5m |
| Jul | 33°C | 17°C | 31 | 13.9h | 5 | 21 mm | 66 % | 8 | 14h 46m |
| Aug | 33°C | 17°C | 31 | 13.3h | 4 | 10 mm | 68 % | 7 | 13h 44m |
| Sep | 28°C | 14°C | 28 | 10.9h | 7 | 57 mm | 70 % | 5 | 12h 25m |
| Oct | 18°C | 7°C | 25 | 8.3h | 11 | 127 mm | 72 % | 4 | 11h 4m |
| Nov | 15°C | 6°C | 21 | 6.8h | 12 | 290 mm | 76 % | 2 | 9h 52m |
| Dec | 13°C | 4°C | 20 | 5.9h | 12 | 465 mm | 77 % | 2 | 9h 15m |