Cottonwood Creek Water Temperature Forecast

Monument, Oregon — MSWCD Gage Station
Forecast: Sunday, August 02, 2026 Temp: Jul 30 – Aug 09, 2026 Flow: Jul 26 – Aug 06 (obs + predicted)
Water temperatures are below alert thresholds (23.0°C / 73.4°F).

7-Day Water Temperature Forecast — Cottonwood Creek

🧊 0-2°C Frigid ❄ 3-6°C Cold 💧 7-10°C Cool ✅ 11-17°C Optimal ☀ 18-22°C Warm 🌡 23-26°C Alert! ⚠ 27°C+ Critical
Today
Aug 02
☀ Warm
MOUTH
19.0°C
66°F
UPSTREAM
16.5°C
62°F
Mon
Aug 03
☀ Warm
MOUTH
18.5°C
65°F
UPSTREAM
16.0°C
61°F
Tue
Aug 04
☀ Warm
MOUTH
18.8°C
66°F
UPSTREAM
16.8°C
62°F
Wed
Aug 05
☀ Warm
MOUTH
19.8°C
68°F
UPSTREAM
18.0°C
64°F
Thu
Aug 06
☀ Warm
MOUTH
20.8°C
69°F
UPSTREAM
19.2°C
67°F
Fri
Aug 07
☀ Warm
MOUTH
21.2°C
70°F
UPSTREAM
19.4°C
67°F
Sat
Aug 08
☀ Warm
MOUTH
21.1°C
70°F
UPSTREAM
18.8°C
66°F

Water Temperature — 3-Day Observed + 7-Day Forecast

Observed
Predicted Mouth
Predicted Upstream
Alert 23.0°C
🧊 0-2°C Frigid
❄ 3-6°C Cold
💧 7-10°C Cool
✅ 11-17°C Optimal
☀ 18-22°C Warm
🌡 23-26°C Alert
⚠ 27°C+ Critical

Discharge (cfs) & Gage Height (ft) — 7-Day Observed + 4-Day Predicted

Observed Flow
Predicted Flow
Predicted flow uses the trained Random Forest model driven by weather forecast and SNOTEL data from Starr Ridge.

7-Day Weather Forecast — Monument, OR

Today
Aug 02
☀
Sunny
78° / 48°F 26° / 9°C
RH 44% · DP 37°F
Mon
Aug 03
☀
Sunny
82° / 46°F 28° / 8°C
RH 37% · DP 35°F
Tue
Aug 04
☀
Sunny
88° / 50°F 31° / 10°C
RH 29% · DP 32°F
Wed
Aug 05
🔥
Hot
95° / 55°F 35° / 13°C
RH 24% · DP 32°F
Thu
Aug 06
🔥
Hot
96° / 60°F 36° / 16°C
RH 23% · DP 34°F
Fri
Aug 07
🔥
Hot
93° / 61°F 34° / 16°C
RH 25% · DP 36°F
Sat
Aug 08
☀
Sunny
90° / 59°F 32° / 15°C
RH 28% · DP 37°F

Daily Detail (°F with °C below)

DateSrcObs WaterPred MouthPred Upstream Flow (cfs)Gage (ft)Air (°F)RH (%)
Thu Jul 30 Obs 68.620.3°C 68.120.0°C 63.617.6°C 0.0 2.536 69.1 39
Fri Jul 31 Obs 68.720.4°C 69.220.7°C 65.218.4°C 0.0 2.519 73.3 28
Sat Aug 01 Obs 68.820.4°C 68.020.0°C 63.117.3°C 0.0 2.502 67.7 48
Today Fcst -- 66.319.0°C 61.716.5°C 0.0 2.490 63.0 44
Mon Aug 03 Fcst -- 65.218.5°C 60.716.0°C 0.0 Pred 2.486 Pred 64.5 37
Tue Aug 04 Fcst -- 65.918.8°C 62.216.8°C 0.0 Pred 2.482 Pred 69.2 29
Wed Aug 05 Fcst -- 67.619.8°C 64.518.0°C 0.0 Pred 2.478 Pred 74.0 24
Thu Aug 06 Fcst -- 69.520.8°C 66.619.2°C 0.0 Pred 2.473 Pred 77.2 23
Fri Aug 07 Fcst -- 70.221.2°C 66.919.4°C 0.0 Pred 2.469 Pred 76.2 25
Sat Aug 08 Fcst -- 69.921.1°C 65.818.8°C 0.0 Pred 2.465 Pred 73.8 28
Sun Aug 09 Fcst -- 68.820.5°C 64.317.9°C 0.0 Pred 2.462 Pred 70.9 33
Cottonwood Creek Water Temperature Prediction System • Generated 2026-08-02
Models: RF flow (Starr Ridge SNOTEL + Monument Wx) → Ridge water temperature