Monthly outlook for Littleton, CO: average high 92.6°, average low 67.6°. That is 5.9° above the climate normal for August. Precipitation is expected on 6 days (about 2.8 inches), against a normal of 5 days and 0.9 inches. The warmest day looks like 11 August (98.5°), the coolest 15 August (63.1°).
92.6°/67.6°
Average high / low
+5.9°
Above normal
6 / 5
Wet days / normal
2.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
91.2°
82.1°
+5°
19 August – 28 August
94.9°
81.7°
+7.3°
29 August – 7 September
at normal
80.5°
—
August records over 66 years
99°4 August 2024All-time high
41.2°28 August 2004All-time low
Climate normals and records are computed from the nearest reference point — Centennial (8 mi).
Mon, 1096° / 66°0.02
96 °
Littleton, Monday, 10 August
Light rain. High 96°, low 66°.
Pressure29.80 inHg
Wind11.5 mph N
Humidity15%
Visibility6.2 mi
Dew point39°
Tue, 1199° / 69°0
99 °
Littleton, Tuesday, 11 August
Mostly clear. High 99°, low 69°.
Pressure29.80 inHg
Wind9.1 mph NE
Humidity13%
Visibility6.2 mi
Dew point37°
Wed, 1298° / 69°0.09
98 °
Littleton, Wednesday, 12 August
Light rain. High 98°, low 69°.
Pressure29.77 inHg
Wind4.7 mph NE
Humidity21%
Visibility6.2 mi
Dew point44°
Thu, 1386° / 64°0.41
86 °
Littleton, Thursday, 13 August
Rain. High 86°, low 64°.
Pressure29.77 inHg
Wind17.1 mph SE
Humidity27%
Visibility—
Dew point46°
Fri, 1480° / 65°0.76
80 °
Littleton, Friday, 14 August
Rain. High 80°, low 65°.
Pressure29.88 inHg
Wind13.7 mph W
Humidity42%
Visibility—
Dew point53°
Sat, 1588° / 63°0.04
88 °
Littleton, Saturday, 15 August
Light rain. High 88°, low 63°.
Pressure30.03 inHg
Wind9.4 mph NE
Humidity29%
Visibility—
Dew point46°
Sun, 1688° / 64°1.29
88 °
Littleton, Sunday, 16 August
Heavy rain. High 88°, low 64°.
Pressure30.09 inHg
Wind10.8 mph W
Humidity38%
Visibility—
Dew point52°
Mon, 1790° / 64°0
90 °
Littleton, Monday, 17 August
Clear. High 90°, low 64°.
Pressure29.97 inHg
Wind9.6 mph NE
Humidity26%
Visibility—
Dew point45°
Tue, 1893° / 69°0
93 °
Littleton, Tuesday, 18 August
Clear. High 93°, low 69°.
Pressure29.94 inHg
Wind7.3 mph SW
Humidity22%
Visibility—
Dew point43°
Wed, 1994° / 69°0
94 °
Littleton, Wednesday, 19 August
Clear. High 94°, low 69°.
Pressure29.97 inHg
Wind8.4 mph E
Humidity18%
Visibility—
Dew point39°
Thu, 2095° / 70°0
95 °
Littleton, Thursday, 20 August
Clear. High 95°, low 70°.
Pressure29.91 inHg
Wind8.3 mph E
Humidity15%
Visibility—
Dew point35°
Fri, 2199° / 72°0.02
99 °
Littleton, Friday, 21 August
Light rain. High 99°, low 72°.
Pressure29.80 inHg
Wind16.4 mph N
Humidity11%
Visibility—
Dew point30°
Sat, 2291° / 70°0
91 °
Littleton, Saturday, 22 August
Clear. High 91°, low 70°.
Pressure30.03 inHg
Wind12.5 mph SW
Humidity23%
Visibility—
Dew point41°
Sun, 2394° / 69°0.15
94 °
Littleton, Sunday, 23 August
Rain. High 94°, low 69°.
Pressure29.97 inHg
Wind24.9 mph N
Humidity17%
Visibility—
Dew point40°
Mon, 2496° / 67°0
96 °
Littleton, Monday, 24 August
Clear. High 96°, low 67°.
Pressure30.03 inHg
Wind8.1 mph SW
Humidity20%
Visibility—
Dew point42°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2582° / 56°0.05
82 °
Littleton, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high82°
Average low56°
Average precipitation0.05 in
Chance of precipitation27%
Record high94° (2020)
Record low44° (1972)
Wed, 2682° / 56°0.07
82 °
Littleton, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high82°
Average low56°
Average precipitation0.07 in
Chance of precipitation25%
Record high90° (2007)
Record low47° (1992)
Thu, 2781° / 56°0.04
81 °
Littleton, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high81°
Average low56°
Average precipitation0.04 in
Chance of precipitation25%
Record high94° (2020)
Record low42° (1992)
Fri, 2881° / 55°0.04
81 °
Littleton, Friday, 28 August
Climate normal for this date — 60-year average.
Average high81°
Average low55°
Average precipitation0.04 in
Chance of precipitation23%
Record high91° (2021)
Record low41° (2004)
Sat, 2982° / 55°0.04
82 °
Littleton, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high82°
Average low55°
Average precipitation0.04 in
Chance of precipitation22%
Record high92° (2012)
Record low46° (2004)
Sun, 3081° / 55°0.04
81 °
Littleton, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high81°
Average low55°
Average precipitation0.04 in
Chance of precipitation20%
Record high91° (2021)
Record low45° (1992)
Mon, 3181° / 55°0.03
81 °
Littleton, Monday, 31 August
Climate normal for this date — 60-year average.
Average high81°
Average low55°
Average precipitation0.03 in
Chance of precipitation32%
Record high93° (2023)
Record low43° (1968)
Tue, 0181° / 54°0.05
81 °
Littleton, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high81°
Average low54°
Average precipitation0.05 in
Chance of precipitation23%
Record high95° (2019)
Record low45° (1965)
Wed, 0280° / 54°0.03
80 °
Littleton, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high80°
Average low54°
Average precipitation0.03 in
Chance of precipitation22%
Record high96° (2019)
Record low40° (1974)
Thu, 0381° / 54°0.04
81 °
Littleton, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high81°
Average low54°
Average precipitation0.04 in
Chance of precipitation22%
Record high92° (2017)
Record low35° (1961)
Fri, 0480° / 53°0.03
80 °
Littleton, Friday, 4 September
Climate normal for this date — 60-year average.
Average high80°
Average low53°
Average precipitation0.03 in
Chance of precipitation15%
Record high93° (2022)
Record low32° (1961)
Sat, 0580° / 53°0.03
80 °
Littleton, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high80°
Average low53°
Average precipitation0.03 in
Chance of precipitation22%
Record high97° (2020)
Record low40° (1968)
Sun, 0680° / 54°0.02
80 °
Littleton, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high80°
Average low54°
Average precipitation0.02 in
Chance of precipitation18%
Record high96° (2020)
Record low43° (1961)
Mon, 0779° / 53°0.04
79 °
Littleton, Monday, 7 September
Climate normal for this date — 60-year average.
Average high79°
Average low53°
Average precipitation0.04 in
Chance of precipitation18%
Record high96° (2022)
Record low46° (1987)
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 Littleton, 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 Littleton, 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.