Monthly outlook for Tall Timber, CO: average high 82.1°, average low 59.6°. That is 0.3° above the climate normal for August. Precipitation is expected on 11 days (about 3.9 inches), against a normal of 8 days and 1.4 inches. The warmest day looks like 8 August (91.6°), the coolest 10 August (56.1°).
82.1°/59.6°
Average high / low
+0.3°
Above normal
11 / 8
Wet days / normal
3.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
82.9°
81.5°
+0.8°
18 August – 27 August
80.7°
81.3°
-0.3°
28 August – 6 September
at normal
80.2°
—
August records over 66 years
97.9°7 August 2025All-time high
40.5°28 August 2004All-time low
Climate normals and records are computed from the nearest reference point — Boulder (5 mi).
Sun, 0989° / 61°0.07
89 °
Tall Timber, Sunday, 9 August
Light rain. High 89°, low 61°.
Pressure29.85 inHg
Wind3.5 mph NW
Humidity13%
Visibility6.2 mi
Dew point31°
Mon, 1089° / 56°0.06
89 °
Tall Timber, Monday, 10 August
Light rain. High 89°, low 56°.
Pressure29.88 inHg
Wind7.5 mph E
Humidity20%
Visibility6.2 mi
Dew point41°
Tue, 1190° / 63°0.01
90 °
Tall Timber, Tuesday, 11 August
Light rain. High 90°, low 63°.
Pressure29.88 inHg
Wind12.2 mph E
Humidity19%
Visibility6.2 mi
Dew point38°
Wed, 1285° / 61°0.13
85 °
Tall Timber, Wednesday, 12 August
Light rain. High 85°, low 61°.
Pressure29.83 inHg
Wind9 mph E
Humidity20%
Visibility6.2 mi
Dew point39°
Thu, 1379° / 59°1.28
79 °
Tall Timber, Thursday, 13 August
Heavy rain. High 79°, low 59°.
Pressure29.83 inHg
Wind11.8 mph W
Humidity38%
Visibility—
Dew point49°
Fri, 1476° / 59°0.2
76 °
Tall Timber, Friday, 14 August
Light rain. High 76°, low 59°.
Pressure30.00 inHg
Wind8 mph E
Humidity69%
Visibility—
Dew point56°
Sat, 1570° / 59°0.61
70 °
Tall Timber, Saturday, 15 August
Rain. High 70°, low 59°.
Pressure30.15 inHg
Wind7.4 mph E
Humidity68%
Visibility—
Dew point58°
Sun, 1677° / 57°0.09
77 °
Tall Timber, Sunday, 16 August
Light rain. High 77°, low 57°.
Pressure30.09 inHg
Wind7.3 mph W
Humidity42%
Visibility—
Dew point49°
Mon, 1782° / 60°0.06
82 °
Tall Timber, Monday, 17 August
Light rain. High 82°, low 60°.
Pressure30.06 inHg
Wind11.4 mph W
Humidity27%
Visibility—
Dew point42°
Tue, 1888° / 61°0
88 °
Tall Timber, Tuesday, 18 August
Clear. High 88°, low 61°.
Pressure30.00 inHg
Wind11 mph W
Humidity23%
Visibility—
Dew point41°
Wed, 1974° / 60°0.91
74 °
Tall Timber, Wednesday, 19 August
Heavy rain. High 74°, low 60°.
Pressure30.06 inHg
Wind8.9 mph W
Humidity47%
Visibility—
Dew point51°
Thu, 2074° / 59°0.14
74 °
Tall Timber, Thursday, 20 August
Light rain. High 74°, low 59°.
Pressure30.00 inHg
Wind10.9 mph W
Humidity47%
Visibility—
Dew point51°
Fri, 2180° / 58°0.31
80 °
Tall Timber, Friday, 21 August
Rain. High 80°, low 58°.
Pressure29.80 inHg
Wind19.6 mph W
Humidity32%
Visibility—
Dew point45°
Sat, 2284° / 58°0
84 °
Tall Timber, Saturday, 22 August
Partly cloudy. High 84°, low 58°.
Pressure29.91 inHg
Wind10.2 mph W
Humidity21%
Visibility—
Dew point35°
Sun, 2383° / 60°0
83 °
Tall Timber, Sunday, 23 August
Partly cloudy. High 83°, low 60°.
Pressure29.88 inHg
Wind10.2 mph W
Humidity26%
Visibility—
Dew point41°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2481° / 56°0.09
81 °
Tall Timber, Monday, 24 August
Climate normal for this date — 60-year average.
Average high81°
Average low56°
Average precipitation0.09 in
Chance of precipitation37%
Record high93° (2020)
Record low44° (1968)
Tue, 2581° / 56°0.07
81 °
Tall Timber, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high81°
Average low56°
Average precipitation0.07 in
Chance of precipitation50%
Record high94° (2019)
Record low47° (1972)
Wed, 2681° / 56°0.08
81 °
Tall Timber, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high81°
Average low56°
Average precipitation0.08 in
Chance of precipitation48%
Record high91° (1994)
Record low48° (1992)
Thu, 2781° / 56°0.08
81 °
Tall Timber, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high81°
Average low56°
Average precipitation0.08 in
Chance of precipitation42%
Record high92° (2012)
Record low43° (1992)
Fri, 2881° / 55°0.07
81 °
Tall Timber, Friday, 28 August
Climate normal for this date — 60-year average.
Average high81°
Average low55°
Average precipitation0.07 in
Chance of precipitation57%
Record high90° (2013)
Record low40° (2004)
Sat, 2981° / 55°0.06
81 °
Tall Timber, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high81°
Average low55°
Average precipitation0.06 in
Chance of precipitation40%
Record high93° (2012)
Record low46° (2004)
Sun, 3081° / 55°0.08
81 °
Tall Timber, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high81°
Average low55°
Average precipitation0.08 in
Chance of precipitation40%
Record high91° (2005)
Record low44° (1964)
Mon, 3180° / 55°0.07
80 °
Tall Timber, Monday, 31 August
Climate normal for this date — 60-year average.
Average high80°
Average low55°
Average precipitation0.07 in
Chance of precipitation42%
Record high93° (2011)
Record low44° (1968)
Tue, 0180° / 54°0.08
80 °
Tall Timber, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high80°
Average low54°
Average precipitation0.08 in
Chance of precipitation37%
Record high94° (2019)
Record low42° (1965)
Wed, 0280° / 53°0.06
80 °
Tall Timber, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high80°
Average low53°
Average precipitation0.06 in
Chance of precipitation38%
Record high95° (2019)
Record low41° (1974)
Thu, 0380° / 53°0.05
80 °
Tall Timber, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high80°
Average low53°
Average precipitation0.05 in
Chance of precipitation30%
Record high92° (2017)
Record low37° (1961)
Fri, 0480° / 53°0.05
80 °
Tall Timber, Friday, 4 September
Climate normal for this date — 60-year average.
Average high80°
Average low53°
Average precipitation0.05 in
Chance of precipitation33%
Record high92° (1960)
Record low41° (1961)
Sat, 0580° / 53°0.05
80 °
Tall Timber, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high80°
Average low53°
Average precipitation0.05 in
Chance of precipitation25%
Record high94° (2020)
Record low44° (1962)
Sun, 0679° / 53°0.06
79 °
Tall Timber, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high79°
Average low53°
Average precipitation0.06 in
Chance of precipitation40%
Record high95° (2020)
Record low43° (1968)
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 Tall Timber, CO 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 Tall Timber, CO 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.