Monthly outlook for Helena, ID: average high 54.4°, average low 33.1°. That is 7° above the climate normal for October. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 5 days and 1.4 inches. The warmest day looks like 17 October (61.1°), the coolest 14 October (24.9°).
54.4°/33.1°
Average high / low
+7°
Above normal
0 / 5
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
14 October – 23 October
55.5°
43.8°
+6.5°
24 October – 2 November
52.5°
37.1°
+8.5°
3 November – 12 November
at normal
32.5°
—
October records over 66 years
75.9°2 October 2010All-time high
-12.5°27 October 1970All-time low
Climate normals and records are computed from the nearest reference point — Devils Ladder (11 mi).
Thu, 1555° / 26°0
55 °
Helena, Thursday, 15 October
Clear. High 55°, low 26°.
Pressure30.47 inHg
Wind1.1 mph NW
Humidity39%
Visibility6.2 mi
Dew point29°
Fri, 1661° / 32°0
61 °
Helena, Friday, 16 October
Overcast. High 61°, low 32°.
Pressure30.45 inHg
Wind8.1 mph S
Humidity39%
Visibility6.2 mi
Dew point31°
Sat, 1761° / 43°0
61 °
Helena, Saturday, 17 October
Overcast. High 61°, low 43°.
Pressure30.18 inHg
Wind8.2 mph S
Humidity38%
Visibility6.2 mi
Dew point32°
Sun, 1860° / 36°0
60 °
Helena, Sunday, 18 October
Mostly clear. High 60°, low 36°.
Pressure30.03 inHg
Wind6 mph S
Humidity40%
Visibility—
Dew point31°
Mon, 1957° / 44°0
57 °
Helena, Monday, 19 October
Overcast. High 57°, low 44°.
Pressure29.83 inHg
Wind6.5 mph S
Humidity40%
Visibility—
Dew point31°
Tue, 2049° / 34°0
49 °
Helena, Tuesday, 20 October
Overcast. High 49°, low 34°.
Pressure29.94 inHg
Wind6.1 mph N
Humidity40%
Visibility—
Dew point19°
Wed, 2154° / 27°0
54 °
Helena, Wednesday, 21 October
Clear. High 54°, low 27°.
Pressure30.03 inHg
Wind5.6 mph N
Humidity32%
Visibility—
Dew point16°
Thu, 2259° / 34°0
59 °
Helena, Thursday, 22 October
Clear. High 59°, low 34°.
Pressure29.85 inHg
Wind4.9 mph N
Humidity26%
Visibility—
Dew point19°
Fri, 2349° / 31°0
49 °
Helena, Friday, 23 October
Partly cloudy. High 49°, low 31°.
Pressure30.12 inHg
Wind8.9 mph N
Humidity42%
Visibility—
Dew point21°
Sat, 2454° / 30°0
54 °
Helena, Saturday, 24 October
Partly cloudy. High 54°, low 30°.
Pressure30.36 inHg
Wind9.7 mph S
Humidity18%
Visibility—
Dew point4°
Sun, 2557° / 34°0
57 °
Helena, Sunday, 25 October
Mostly clear. High 57°, low 34°.
Pressure30.33 inHg
Wind7.8 mph S
Humidity23%
Visibility—
Dew point13°
Mon, 2655° / 35°0
55 °
Helena, Monday, 26 October
Overcast. High 55°, low 35°.
Pressure30.09 inHg
Wind6.9 mph S
Humidity21%
Visibility—
Dew point10°
Tue, 2749° / 33°0
49 °
Helena, Tuesday, 27 October
Partly cloudy. High 49°, low 33°.
Pressure30.09 inHg
Wind7 mph NW
Humidity37%
Visibility—
Dew point20°
Wed, 2849° / 31°0
49 °
Helena, Wednesday, 28 October
Overcast. High 49°, low 31°.
Pressure30.03 inHg
Wind9 mph S
Humidity16%
Visibility—
Dew point0°
Thu, 2951° / 34°0
51 °
Helena, Thursday, 29 October
Overcast. High 51°, low 34°.
Pressure29.94 inHg
Wind10.4 mph S
Humidity24%
Visibility—
Dew point11°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 3036° / 20°0.08
36 °
Helena, Friday, 30 October
Climate normal for this date — 60-year average.
Average high36°
Average low20°
Average precipitation0.08 in
Chance of precipitation27%
Record high55° (1962)
Record low-9° (2019)
Sat, 3135° / 21°0.11
35 °
Helena, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high35°
Average low21°
Average precipitation0.11 in
Chance of precipitation45%
Record high54° (1988)
Record low-1° (2002)
Sun, 0135° / 20°0.11
35 °
Helena, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high35°
Average low20°
Average precipitation0.11 in
Chance of precipitation42%
Record high53° (1965)
Record low-2° (2004)
Mon, 0235° / 19°0.11
35 °
Helena, Monday, 2 November
Climate normal for this date — 60-year average.
Average high35°
Average low19°
Average precipitation0.11 in
Chance of precipitation42%
Record high54° (1962)
Record low-10° (1991)
Tue, 0335° / 19°0.06
35 °
Helena, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high35°
Average low19°
Average precipitation0.06 in
Chance of precipitation25%
Record high53° (1962)
Record low-12° (1973)
Wed, 0435° / 20°0.13
35 °
Helena, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high35°
Average low20°
Average precipitation0.13 in
Chance of precipitation48%
Record high52° (1980)
Record low-1° (2017)
Thu, 0534° / 20°0.11
34 °
Helena, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high34°
Average low20°
Average precipitation0.11 in
Chance of precipitation47%
Record high52° (1980)
Record low-11° (1971)
Fri, 0634° / 20°0.13
34 °
Helena, Friday, 6 November
Climate normal for this date — 60-year average.
Average high34°
Average low20°
Average precipitation0.13 in
Chance of precipitation50%
Record high52° (1999)
Record low-10° (1971)
Sat, 0733° / 18°0.15
33 °
Helena, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high33°
Average low18°
Average precipitation0.15 in
Chance of precipitation50%
Record high52° (1999)
Record low-4° (1990)
Sun, 0832° / 17°0.11
32 °
Helena, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high32°
Average low17°
Average precipitation0.11 in
Chance of precipitation47%
Record high52° (2016)
Record low-15° (1994)
Mon, 0931° / 17°0.13
31 °
Helena, Monday, 9 November
Climate normal for this date — 60-year average.
Average high31°
Average low17°
Average precipitation0.13 in
Chance of precipitation52%
Record high51° (2016)
Record low0° (1960)
Tue, 1031° / 17°0.09
31 °
Helena, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high31°
Average low17°
Average precipitation0.09 in
Chance of precipitation43%
Record high52° (2016)
Record low-10° (1986)
Wed, 1131° / 17°0.09
31 °
Helena, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high31°
Average low17°
Average precipitation0.09 in
Chance of precipitation37%
Record high51° (2016)
Record low-3° (2000)
Thu, 1231° / 17°0.13
31 °
Helena, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high31°
Average low17°
Average precipitation0.13 in
Chance of precipitation45%
Record high51° (1999)
Record low-10° (2000)
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 Helena, ID 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 Helena, ID 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.