Monthly outlook for Brighton, CO: average high 64.9°, average low 46.1°. That is 0.8° above the climate normal for October. Precipitation is expected on 5 days (about 1.9 inches), against a normal of 3 days and 0.8 inches. The warmest day looks like 9 October (86.2°), the coolest 16 October (33.8°).
64.9°/46.1°
Average high / low
+0.8°
Above normal
5 / 3
Wet days / normal
1.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 October – 18 October
66.7°
64.1°
+1.4°
19 October – 28 October
62°
61.1°
+0.5°
29 October – 7 November
at normal
54.1°
—
October records over 66 years
88.2°3 October 2025All-time high
-5.3°30 October 1993All-time low
Climate normals and records are computed from the nearest reference point — Thornton (9 mi).
Sat, 1084° / 59°0
84 °
Brighton, Saturday, 10 October
Clear. High 84°, low 59°.
Pressure29.62 inHg
Wind3.2 mph S
Humidity16%
Visibility6.2 mi
Dew point31°
Sun, 1183° / 59°0
83 °
Brighton, Sunday, 11 October
Light rain. High 83°, low 59°.
Pressure29.71 inHg
Wind0.6 mph N
Humidity29%
Visibility6.2 mi
Dew point40°
Mon, 1281° / 57°0
81 °
Brighton, Monday, 12 October
Clear. High 81°, low 57°.
Pressure29.68 inHg
Wind1.6 mph W
Humidity22%
Visibility6.2 mi
Dew point35°
Tue, 1363° / 53°0
63 °
Brighton, Tuesday, 13 October
Light rain. High 63°, low 53°.
Pressure29.97 inHg
Wind10.9 mph NW
Humidity65%
Visibility—
Dew point46°
Wed, 1459° / 49°0.23
59 °
Brighton, Wednesday, 14 October
Rain. High 59°, low 49°.
Pressure29.71 inHg
Wind47.5 mph N
Humidity61%
Visibility—
Dew point44°
Thu, 1565° / 41°0.37
65 °
Brighton, Thursday, 15 October
Rain. High 65°, low 41°.
Pressure29.85 inHg
Wind18.4 mph N
Humidity28%
Visibility—
Dew point28°
Fri, 1638° / 34°0.52
38 °
Brighton, Friday, 16 October
Snow. High 38°, low 34°.
Pressure30.59 inHg
Wind15.3 mph N
Humidity89%
Visibility—
Dew point32°
Sat, 1754° / 34°0
54 °
Brighton, Saturday, 17 October
Overcast. High 54°, low 34°.
Pressure30.39 inHg
Wind6.1 mph S
Humidity48%
Visibility—
Dew point28°
Sun, 1854° / 40°0.23
54 °
Brighton, Sunday, 18 October
Rain. High 54°, low 40°.
Pressure30.24 inHg
Wind13 mph N
Humidity36%
Visibility—
Dew point26°
Mon, 1946° / 37°0.54
46 °
Brighton, Monday, 19 October
Rain. High 46°, low 37°.
Pressure30.33 inHg
Wind8.2 mph NW
Humidity93%
Visibility—
Dew point37°
Tue, 2065° / 40°0
65 °
Brighton, Tuesday, 20 October
Clear. High 65°, low 40°.
Pressure30.06 inHg
Wind7.9 mph E
Humidity32%
Visibility—
Dew point27°
Wed, 2166° / 44°0
66 °
Brighton, Wednesday, 21 October
Clear. High 66°, low 44°.
Pressure30.06 inHg
Wind7.2 mph S
Humidity34%
Visibility—
Dew point29°
Thu, 2261° / 44°0
61 °
Brighton, Thursday, 22 October
Clear. High 61°, low 44°.
Pressure30.30 inHg
Wind8.4 mph SE
Humidity35%
Visibility—
Dew point28°
Fri, 2369° / 43°0
69 °
Brighton, Friday, 23 October
Clear. High 69°, low 43°.
Pressure30.09 inHg
Wind7.2 mph SE
Humidity32%
Visibility—
Dew point29°
Sat, 2466° / 48°0
66 °
Brighton, Saturday, 24 October
Clear. High 66°, low 48°.
Pressure30.09 inHg
Wind7.1 mph SE
Humidity25%
Visibility—
Dew point27°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2561° / 34°0.05
61 °
Brighton, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high61°
Average low34°
Average precipitation0.05 in
Chance of precipitation17%
Record high80° (2017)
Record low3° (1975)
Mon, 2659° / 34°0.07
59 °
Brighton, Monday, 26 October
Climate normal for this date — 60-year average.
Average high59°
Average low34°
Average precipitation0.07 in
Chance of precipitation17%
Record high76° (1977)
Record low-1° (2020)
Tue, 2758° / 33°0.03
58 °
Brighton, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high58°
Average low33°
Average precipitation0.03 in
Chance of precipitation23%
Record high80° (2016)
Record low0° (2020)
Wed, 2859° / 32°0.06
59 °
Brighton, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high59°
Average low32°
Average precipitation0.06 in
Chance of precipitation18%
Record high79° (2024)
Record low7° (2011)
Thu, 2957° / 32°0.07
57 °
Brighton, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high57°
Average low32°
Average precipitation0.07 in
Chance of precipitation27%
Record high78° (2018)
Record low5° (2019)
Fri, 3054° / 30°0.05
54 °
Brighton, Friday, 30 October
Climate normal for this date — 60-year average.
Average high54°
Average low30°
Average precipitation0.05 in
Chance of precipitation27%
Record high76° (1968)
Record low-5° (1993)
Sat, 3153° / 30°0.04
53 °
Brighton, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high53°
Average low30°
Average precipitation0.04 in
Chance of precipitation23%
Record high76° (2016)
Record low4° (2019)
Sun, 0153° / 30°0.07
53 °
Brighton, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high53°
Average low30°
Average precipitation0.07 in
Chance of precipitation27%
Record high72° (1988)
Record low8° (1979)
Mon, 0252° / 29°0.07
52 °
Brighton, Monday, 2 November
Climate normal for this date — 60-year average.
Average high52°
Average low29°
Average precipitation0.07 in
Chance of precipitation27%
Record high81° (2025)
Record low2° (1991)
Tue, 0353° / 28°0.05
53 °
Brighton, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high53°
Average low28°
Average precipitation0.05 in
Chance of precipitation22%
Record high72° (2020)
Record low-8° (1991)
Wed, 0454° / 29°0.03
54 °
Brighton, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high54°
Average low29°
Average precipitation0.03 in
Chance of precipitation18%
Record high74° (2020)
Record low5° (2002)
Thu, 0555° / 29°0.03
55 °
Brighton, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high55°
Average low29°
Average precipitation0.03 in
Chance of precipitation15%
Record high73° (2023)
Record low2° (1967)
Fri, 0655° / 29°0.03
55 °
Brighton, Friday, 6 November
Climate normal for this date — 60-year average.
Average high55°
Average low29°
Average precipitation0.03 in
Chance of precipitation13%
Record high74° (2010)
Record low3° (1967)
Sat, 0755° / 29°0.02
55 °
Brighton, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high55°
Average low29°
Average precipitation0.02 in
Chance of precipitation15%
Record high74° (2021)
Record low6° (1967)
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 Brighton, 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 Brighton, 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.