Monthly outlook for Triumph, ID: average high 72.7°, average low 52°. That is 4.1° below the climate normal for August. Precipitation is expected on 5 days (about 1.7 inches), against a normal of 2 days and 0.4 inches. The warmest day looks like 9 August (86.3°), the coolest 23 August (45.3°).
72.7°/52°
Average high / low
−4.1°
Below normal
5 / 2
Wet days / normal
1.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
73.9°
81°
-4°
19 August – 28 August
70.6°
78.4°
-4.3°
29 August – 7 September
at normal
76.3°
—
August records over 66 years
95°3 August 2024All-time high
34°25 August 1960All-time low
Climate normals and records are computed from the nearest reference point — Hailey (9 mi).
Mon, 1086° / 48°0
86 °
Triumph, Monday, 10 August
Clear. High 86°, low 48°.
Pressure29.85 inHg
Wind11.9 mph SW
Humidity11%
Visibility6.2 mi
Dew point22°
Tue, 1186° / 55°0
86 °
Triumph, Tuesday, 11 August
Clear. High 86°, low 55°.
Pressure29.91 inHg
Wind7 mph SW
Humidity10%
Visibility6.2 mi
Dew point21°
Wed, 1274° / 61°0.02
74 °
Triumph, Wednesday, 12 August
Light rain. High 74°, low 61°.
Pressure29.94 inHg
Wind8.9 mph S
Humidity18%
Visibility6.2 mi
Dew point24°
Thu, 1374° / 54°0.04
74 °
Triumph, Thursday, 13 August
Light rain. High 74°, low 54°.
Pressure29.80 inHg
Wind10.4 mph S
Humidity27%
Visibility—
Dew point36°
Fri, 1460° / 51°0.91
60 °
Triumph, Friday, 14 August
Heavy rain. High 60°, low 51°.
Pressure30.03 inHg
Wind9.4 mph NE
Humidity84%
Visibility—
Dew point49°
Sat, 1575° / 49°0.01
75 °
Triumph, Saturday, 15 August
Light rain. High 75°, low 49°.
Pressure30.09 inHg
Wind9.4 mph S
Humidity34%
Visibility—
Dew point38°
Sun, 1663° / 54°0.12
63 °
Triumph, Sunday, 16 August
Light rain. High 63°, low 54°.
Pressure30.09 inHg
Wind6.2 mph SE
Humidity64%
Visibility—
Dew point47°
Mon, 1767° / 51°0.2
67 °
Triumph, Monday, 17 August
Light rain. High 67°, low 51°.
Pressure30.09 inHg
Wind10.4 mph S
Humidity77%
Visibility—
Dew point49°
Tue, 1867° / 53°0
67 °
Triumph, Tuesday, 18 August
Overcast. High 67°, low 53°.
Pressure29.94 inHg
Wind11.8 mph SW
Humidity25%
Visibility—
Dew point28°
Wed, 1973° / 52°0
73 °
Triumph, Wednesday, 19 August
Overcast. High 73°, low 52°.
Pressure29.94 inHg
Wind8 mph SW
Humidity23%
Visibility—
Dew point28°
Thu, 2077° / 56°0
77 °
Triumph, Thursday, 20 August
Partly cloudy. High 77°, low 56°.
Pressure29.91 inHg
Wind8.7 mph S
Humidity21%
Visibility—
Dew point30°
Fri, 2169° / 55°0.15
69 °
Triumph, Friday, 21 August
Light rain. High 69°, low 55°.
Pressure29.97 inHg
Wind6.8 mph SW
Humidity51%
Visibility—
Dew point43°
Sat, 2264° / 50°0.28
64 °
Triumph, Saturday, 22 August
Rain. High 64°, low 50°.
Pressure29.91 inHg
Wind13.7 mph SW
Humidity48%
Visibility—
Dew point40°
Sun, 2367° / 45°0
67 °
Triumph, Sunday, 23 August
Overcast. High 67°, low 45°.
Pressure30.03 inHg
Wind12.3 mph SW
Humidity19%
Visibility—
Dew point17°
Mon, 2474° / 50°0
74 °
Triumph, Monday, 24 August
Partly cloudy. High 74°, low 50°.
Pressure29.91 inHg
Wind11.7 mph SW
Humidity23%
Visibility—
Dew point28°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2578° / 51°0.02
78 °
Triumph, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high78°
Average low51°
Average precipitation0.02 in
Chance of precipitation18%
Record high88° (1985)
Record low34° (1960)
Wed, 2678° / 51°0.01
78 °
Triumph, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high78°
Average low51°
Average precipitation0.01 in
Chance of precipitation5%
Record high90° (2011)
Record low37° (1993)
Thu, 2778° / 51°0.02
78 °
Triumph, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high78°
Average low51°
Average precipitation0.02 in
Chance of precipitation10%
Record high90° (2017)
Record low37° (1964)
Fri, 2878° / 51°0.01
78 °
Triumph, Friday, 28 August
Climate normal for this date — 60-year average.
Average high78°
Average low51°
Average precipitation0.01 in
Chance of precipitation3%
Record high90° (2017)
Record low35° (1960)
Sat, 2978° / 51°0.01
78 °
Triumph, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high78°
Average low51°
Average precipitation0.01 in
Chance of precipitation8%
Record high89° (2017)
Record low35° (1964)
Sun, 3078° / 51°0.02
78 °
Triumph, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high78°
Average low51°
Average precipitation0.02 in
Chance of precipitation12%
Record high90° (2022)
Record low35° (1965)
Mon, 3176° / 49°0.02
76 °
Triumph, Monday, 31 August
Climate normal for this date — 60-year average.
Average high76°
Average low49°
Average precipitation0.02 in
Chance of precipitation15%
Record high92° (2022)
Record low35° (1965)
Tue, 0177° / 49°0.02
77 °
Triumph, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high77°
Average low49°
Average precipitation0.02 in
Chance of precipitation5%
Record high91° (2022)
Record low37° (1980)
Wed, 0276° / 50°0.02
76 °
Triumph, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high76°
Average low50°
Average precipitation0.02 in
Chance of precipitation8%
Record high88° (2025)
Record low36° (1964)
Thu, 0377° / 49°0.02
77 °
Triumph, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high77°
Average low49°
Average precipitation0.02 in
Chance of precipitation10%
Record high93° (2022)
Record low34° (1964)
Fri, 0476° / 50°0.02
76 °
Triumph, Friday, 4 September
Climate normal for this date — 60-year average.
Average high76°
Average low50°
Average precipitation0.02 in
Chance of precipitation8%
Record high91° (2022)
Record low35° (1971)
Sat, 0576° / 49°0.03
76 °
Triumph, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high76°
Average low49°
Average precipitation0.03 in
Chance of precipitation12%
Record high93° (2020)
Record low38° (2014)
Sun, 0675° / 49°0.04
75 °
Triumph, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high75°
Average low49°
Average precipitation0.04 in
Chance of precipitation22%
Record high94° (2022)
Record low35° (2015)
Mon, 0775° / 48°0.02
75 °
Triumph, Monday, 7 September
Climate normal for this date — 60-year average.
Average high75°
Average low48°
Average precipitation0.02 in
Chance of precipitation12%
Record high93° (2022)
Record low32° (1992)
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Triumph, ID are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in Triumph, ID since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.