Cottonwood Creek Water Temperature Forecast

Monument, Oregon — MSWCD Gage Station
Forecast: Sunday, July 19, 2026 Temp: Jul 16 – Jul 26, 2026 Flow: Jul 12 – Jul 23 (obs + predicted)
Water Temperature Alert! — Predicted water temperature exceeds 23.0°C (73.4°F) on 2 days during the forecast period.

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
Jul 19
☀ Warm
MOUTH
20.7°C
69°F
UPSTREAM
18.5°C
65°F
Mon
Jul 20
☀ Warm
MOUTH
21.5°C
71°F
UPSTREAM
19.1°C
66°F
Tue
Jul 21
☀ Warm
MOUTH
22.5°C
72°F
UPSTREAM
20.3°C
69°F
Wed
Jul 22
🌡 Alert!
MOUTH
23.1°C
74°F
UPSTREAM
20.6°C
69°F
Thu
Jul 23
🌡 Alert!
MOUTH
23.3°C
74°F
UPSTREAM
20.7°C
69°F
Fri
Jul 24
☀ Warm
MOUTH
22.9°C
73°F
UPSTREAM
20.2°C
68°F
Sat
Jul 25
☀ Warm
MOUTH
22.3°C
72°F
UPSTREAM
19.5°C
67°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
Jul 19
🔥
Hot
93° / 55°F 34° / 13°C
RH 32% · DP 40°F
Mon
Jul 20
☀
Sunny
90° / 63°F 32° / 17°C
RH 30% · DP 42°F
Tue
Jul 21
🔥
Hot
95° / 64°F 35° / 18°C
RH 31% · DP 45°F
Wed
Jul 22
🔥
Hot
93° / 66°F 34° / 19°C
RH 37% · DP 50°F
Thu
Jul 23
🔥
Hot
94° / 65°F 34° / 18°C
RH 42% · DP 52°F
Fri
Jul 24
🔥
Hot
92° / 63°F 33° / 17°C
RH 40% · DP 48°F
Sat
Jul 25
☀
Sunny
90° / 60°F 32° / 16°C
RH 34% · DP 42°F

Daily Detail (°F with °C below)

DateSrcObs WaterPred MouthPred Upstream Flow (cfs)Gage (ft)Air (°F)RH (%)
Thu Jul 16 Obs 72.522.5°C 71.221.8°C 66.419.1°C 0.2 2.614 72.1 57
Fri Jul 17 Obs 70.521.4°C 70.421.3°C 65.418.6°C 0.2 2.619 69.8 38
Sat Jul 18 Obs 67.519.7°C 69.120.6°C 63.917.7°C 0.1 2.563 68.5 45
Today Fcst -- 69.220.7°C 65.218.5°C 0.0 2.528 75.2 32
Mon Jul 20 Fcst -- 70.621.5°C 66.319.1°C 0.0 Pred 2.520 Pred 76.8 30
Tue Jul 21 Fcst -- 72.522.5°C 68.520.3°C 0.0 Pred 2.513 Pred 79.9 31
Wed Jul 22 Fcst -- 73.523.1°C 69.020.6°C 0.0 Pred 2.506 Pred 79.6 37
Thu Jul 23 Fcst -- 74.023.3°C 69.320.7°C 0.0 Pred 2.499 Pred 78.9 42
Fri Jul 24 Fcst -- 73.322.9°C 68.420.2°C 0.0 Pred 2.493 Pred 76.5 40
Sat Jul 25 Fcst -- 72.122.3°C 67.219.5°C 0.0 Pred 2.487 Pred 74.6 34
Sun Jul 26 Fcst -- 70.721.5°C 65.818.8°C 0.0 Pred 2.481 Pred 72.6 34
Cottonwood Creek Water Temperature Prediction System • Generated 2026-07-19
Models: RF flow (Starr Ridge SNOTEL + Monument Wx) → Ridge water temperature