Monthly outlook for Leyden, CO: average high 62.1°, average low 44.3°. That is 3° above the climate normal for October. Precipitation is expected on 3 days (about 0.2 inches), against a normal of 4 days and 1.0 inches. The warmest day looks like 23 October (73.6°), the coolest 28 October (30.5°).
62.1°/44.3°
Average high / low
+3°
Above normal
3 / 4
Wet days / normal
0.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
19 October – 28 October
62.7°
59.4°
+1.8°
29 October – 7 November
61.1°
52.9°
+4.6°
8 November – 17 November
at normal
50.1°
—
October records over 66 years
85.8°3 October 2025All-time high
-8°30 October 1993All-time low
Climate normals and records are computed from the nearest reference point — Arvada (2 mi).
Tue, 2071° / 46°0
71 °
Leyden, Tuesday, 20 October
Mostly clear. High 71°, low 46°.
Pressure30.03 inHg
Wind4 mph NE
Humidity28%
Visibility6.2 mi
Dew point31°
Wed, 2172° / 43°0
72 °
Leyden, Wednesday, 21 October
Partly cloudy. High 72°, low 43°.
Pressure30.12 inHg
Wind6.9 mph SE
Humidity27%
Visibility6.2 mi
Dew point33°
Thu, 2271° / 50°0.04
71 °
Leyden, Thursday, 22 October
Light rain. High 71°, low 50°.
Pressure30.03 inHg
Wind2.7 mph E
Humidity36%
Visibility6.2 mi
Dew point38°
Fri, 2374° / 50°0
74 °
Leyden, Friday, 23 October
Clear. High 74°, low 50°.
Pressure29.62 inHg
Wind8.2 mph N
Humidity24%
Visibility—
Dew point32°
Sat, 2461° / 43°0
61 °
Leyden, Saturday, 24 October
Overcast. High 61°, low 43°.
Pressure30.00 inHg
Wind6.9 mph NE
Humidity36%
Visibility—
Dew point29°
Sun, 2564° / 44°0
64 °
Leyden, Sunday, 25 October
Clear. High 64°, low 44°.
Pressure30.21 inHg
Wind6.2 mph W
Humidity11%
Visibility—
Dew point3°
Mon, 2662° / 49°0
62 °
Leyden, Monday, 26 October
Clear. High 62°, low 49°.
Pressure30.06 inHg
Wind9.1 mph W
Humidity12%
Visibility—
Dew point5°
Tue, 2745° / 36°0
45 °
Leyden, Tuesday, 27 October
Light snow. High 45°, low 36°.
Pressure30.24 inHg
Wind8.8 mph NE
Humidity43%
Visibility—
Dew point20°
Wed, 2841° / 31°0.06
41 °
Leyden, Wednesday, 28 October
Light snow. High 41°, low 31°.
Pressure30.39 inHg
Wind6.2 mph NE
Humidity66%
Visibility—
Dew point24°
Thu, 2962° / 36°0
62 °
Leyden, Thursday, 29 October
Clear. High 62°, low 36°.
Pressure29.94 inHg
Wind5.7 mph SE
Humidity27%
Visibility—
Dew point21°
Fri, 3062° / 50°0
62 °
Leyden, Friday, 30 October
Overcast. High 62°, low 50°.
Pressure29.85 inHg
Wind4.9 mph W
Humidity20%
Visibility—
Dew point18°
Sat, 3163° / 51°0
63 °
Leyden, Saturday, 31 October
Overcast. High 63°, low 51°.
Pressure29.91 inHg
Wind6.2 mph SW
Humidity37%
Visibility—
Dew point32°
Sun, 0167° / 50°0.05
67 °
Leyden, Sunday, 1 November
Light rain. High 67°, low 50°.
Pressure29.74 inHg
Wind12 mph NW
Humidity41%
Visibility—
Dew point34°
Mon, 0257° / 45°0.02
57 °
Leyden, Monday, 2 November
Light rain. High 57°, low 45°.
Pressure29.94 inHg
Wind10.8 mph S
Humidity31%
Visibility—
Dew point26°
Tue, 0355° / 42°0
55 °
Leyden, Tuesday, 3 November
Mostly clear. High 55°, low 42°.
Pressure30.21 inHg
Wind6 mph NW
Humidity45%
Visibility—
Dew point29°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 0453° / 28°0.03
53 °
Leyden, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high53°
Average low28°
Average precipitation0.03 in
Chance of precipitation23%
Record high73° (2025)
Record low2° (2002)
Thu, 0553° / 29°0.04
53 °
Leyden, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high53°
Average low29°
Average precipitation0.04 in
Chance of precipitation17%
Record high72° (2023)
Record low1° (1967)
Fri, 0654° / 29°0.04
54 °
Leyden, Friday, 6 November
Climate normal for this date — 60-year average.
Average high54°
Average low29°
Average precipitation0.04 in
Chance of precipitation15%
Record high74° (2021)
Record low1° (1967)
Sat, 0754° / 29°0.03
54 °
Leyden, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high54°
Average low29°
Average precipitation0.03 in
Chance of precipitation17%
Record high73° (2021)
Record low6° (2000)
Sun, 0853° / 29°0.06
53 °
Leyden, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high53°
Average low29°
Average precipitation0.06 in
Chance of precipitation25%
Record high72° (1978)
Record low6° (1993)
Mon, 0951° / 28°0.09
51 °
Leyden, Monday, 9 November
Climate normal for this date — 60-year average.
Average high51°
Average low28°
Average precipitation0.09 in
Chance of precipitation28%
Record high70° (2016)
Record low8° (1993)
Tue, 1051° / 26°0.04
51 °
Leyden, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high51°
Average low26°
Average precipitation0.04 in
Chance of precipitation22%
Record high71° (2025)
Record low9° (1998)
Wed, 1149° / 26°0.05
49 °
Leyden, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high49°
Average low26°
Average precipitation0.05 in
Chance of precipitation25%
Record high70° (2025)
Record low5° (1998)
Thu, 1249° / 25°0.05
49 °
Leyden, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high49°
Average low25°
Average precipitation0.05 in
Chance of precipitation25%
Record high69° (1999)
Record low0° (2014)
Fri, 1351° / 27°0.04
51 °
Leyden, Friday, 13 November
Climate normal for this date — 60-year average.
Average high51°
Average low27°
Average precipitation0.04 in
Chance of precipitation20%
Record high72° (2025)
Record low-3° (2000)
Sat, 1449° / 26°0.07
49 °
Leyden, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high49°
Average low26°
Average precipitation0.07 in
Chance of precipitation30%
Record high73° (2025)
Record low-2° (1961)
Sun, 1549° / 24°0.06
49 °
Leyden, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high49°
Average low24°
Average precipitation0.06 in
Chance of precipitation22%
Record high73° (2016)
Record low-10° (1997)
Mon, 1651° / 25°0.02
51 °
Leyden, Monday, 16 November
Climate normal for this date — 60-year average.
Average high51°
Average low25°
Average precipitation0.02 in
Chance of precipitation17%
Record high74° (2016)
Record low-8° (2014)
Tue, 1749° / 25°0.05
49 °
Leyden, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high49°
Average low25°
Average precipitation0.05 in
Chance of precipitation23%
Record high70° (1981)
Record low-2° (1980)
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 Leyden, 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 Leyden, 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.