Monthly outlook for Twin Spruce, CO: average high 74.9°, average low 53.2°. That is 3.6° below the climate normal for August. Precipitation is expected on 10 days (about 1.8 inches), against a normal of 8 days and 1.5 inches. The warmest day looks like 11 August (82.5°), the coolest 13 August (50.1°).
74.9°/53.2°
Average high / low
−3.6°
Below normal
10 / 8
Wet days / normal
1.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
74.7°
81.5°
-3.8°
19 August – 28 August
75.2°
81.2°
-3.3°
29 August – 7 September
at normal
79.9°
—
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 (11 mi).
Mon, 1082° / 52°0
82 °
Twin Spruce, Monday, 10 August
Light rain. High 82°, low 52°.
Pressure29.88 inHg
Wind5.7 mph NE
Humidity18%
Visibility6.2 mi
Dew point35°
Tue, 1183° / 57°0.03
83 °
Twin Spruce, Tuesday, 11 August
Light rain. High 83°, low 57°.
Pressure29.88 inHg
Wind11.7 mph E
Humidity17%
Visibility6.2 mi
Dew point34°
Wed, 1278° / 54°0.3
78 °
Twin Spruce, Wednesday, 12 August
Rain. High 78°, low 54°.
Pressure29.83 inHg
Wind9.6 mph E
Humidity21%
Visibility6.2 mi
Dew point37°
Thu, 1370° / 50°0.22
70 °
Twin Spruce, Thursday, 13 August
Rain. High 70°, low 50°.
Pressure29.83 inHg
Wind7.6 mph SE
Humidity41%
Visibility—
Dew point42°
Fri, 1465° / 51°0.19
65 °
Twin Spruce, Friday, 14 August
Light rain. High 65°, low 51°.
Pressure29.97 inHg
Wind5.1 mph E
Humidity55%
Visibility—
Dew point47°
Sat, 1569° / 51°0.28
69 °
Twin Spruce, Saturday, 15 August
Rain. High 69°, low 51°.
Pressure30.09 inHg
Wind9.3 mph E
Humidity38%
Visibility—
Dew point40°
Sun, 1670° / 50°0.06
70 °
Twin Spruce, Sunday, 16 August
Light rain. High 70°, low 50°.
Pressure30.12 inHg
Wind8.4 mph E
Humidity43%
Visibility—
Dew point44°
Mon, 1774° / 53°0.3
74 °
Twin Spruce, Monday, 17 August
Rain. High 74°, low 53°.
Pressure30.03 inHg
Wind13.1 mph W
Humidity30%
Visibility—
Dew point38°
Tue, 1874° / 54°0.01
74 °
Twin Spruce, Tuesday, 18 August
Light rain. High 74°, low 54°.
Pressure30.00 inHg
Wind11.4 mph W
Humidity31%
Visibility—
Dew point37°
Wed, 1977° / 54°0.1
77 °
Twin Spruce, Wednesday, 19 August
Light rain. High 77°, low 54°.
Pressure29.97 inHg
Wind13.3 mph NW
Humidity27%
Visibility—
Dew point38°
Thu, 2075° / 54°0.06
75 °
Twin Spruce, Thursday, 20 August
Light rain. High 75°, low 54°.
Pressure30.00 inHg
Wind10.6 mph W
Humidity29%
Visibility—
Dew point38°
Fri, 2177° / 54°0.12
77 °
Twin Spruce, Friday, 21 August
Light rain. High 77°, low 54°.
Pressure29.91 inHg
Wind9.8 mph W
Humidity25%
Visibility—
Dew point35°
Sat, 2273° / 52°0.04
73 °
Twin Spruce, Saturday, 22 August
Light rain. High 73°, low 52°.
Pressure29.91 inHg
Wind10 mph W
Humidity27%
Visibility—
Dew point35°
Sun, 2375° / 52°0.02
75 °
Twin Spruce, Sunday, 23 August
Light rain. High 75°, low 52°.
Pressure29.94 inHg
Wind10.7 mph W
Humidity23%
Visibility—
Dew point32°
Mon, 2474° / 53°0
74 °
Twin Spruce, Monday, 24 August
Mostly clear. High 74°, low 53°.
Pressure29.97 inHg
Wind11.6 mph S
Humidity23%
Visibility—
Dew point31°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2581° / 56°0.07
81 °
Twin Spruce, 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 °
Twin Spruce, 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 °
Twin Spruce, 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 °
Twin Spruce, 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 °
Twin Spruce, 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 °
Twin Spruce, 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 °
Twin Spruce, 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 °
Twin Spruce, 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 °
Twin Spruce, 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 °
Twin Spruce, 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 °
Twin Spruce, 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 °
Twin Spruce, 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 °
Twin Spruce, 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)
Mon, 0778° / 53°0.07
78 °
Twin Spruce, Monday, 7 September
Climate normal for this date — 60-year average.
Average high78°
Average low53°
Average precipitation0.07 in
Chance of precipitation33%
Record high93° (2022)
Record low43° (2010)
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 Twin Spruce, 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 Twin Spruce, 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.