Monthly outlook for Myrtle, ID: average high 60.5°, average low 43.6°. That is 0.4° below the climate normal for October. Precipitation is expected on 6 days (about 1.4 inches), against a normal of 5 days and 1.1 inches. The warmest day looks like 18 October (70.7°), the coolest 13 October (35.2°).
60.5°/43.6°
Average high / low
−0.4°
Below normal
6 / 5
Wet days / normal
1.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
10 October – 19 October
63.2°
62.3°
+0.5°
20 October – 29 October
56°
57.9°
-1.1°
30 October – 8 November
at normal
52°
—
October records over 66 years
88°2 October 1987All-time high
14.5°30 October 2019All-time low
Climate normals and records are computed from the nearest reference point — Culdesac (9 mi).
Sun, 1158° / 39°0.07
58 °
Myrtle, Sunday, 11 October
Light rain. High 58°, low 39°.
Pressure29.88 inHg
Wind5 mph E
Humidity48%
Visibility6.2 mi
Dew point31°
Mon, 1252° / 39°0
52 °
Myrtle, Monday, 12 October
Partly cloudy. High 52°, low 39°.
Pressure30.06 inHg
Wind2.7 mph S
Humidity54%
Visibility6.2 mi
Dew point33°
Tue, 1358° / 35°0
58 °
Myrtle, Tuesday, 13 October
Clear. High 58°, low 35°.
Pressure30.15 inHg
Wind0.5 mph SE
Humidity56%
Visibility6.2 mi
Dew point37°
Wed, 1461° / 36°0
61 °
Myrtle, Wednesday, 14 October
Clear. High 61°, low 36°.
Pressure30.21 inHg
Wind3.7 mph N
Humidity58%
Visibility—
Dew point36°
Thu, 1567° / 39°0
67 °
Myrtle, Thursday, 15 October
Clear. High 67°, low 39°.
Pressure30.33 inHg
Wind4.2 mph N
Humidity51%
Visibility—
Dew point37°
Fri, 1667° / 44°0
67 °
Myrtle, Friday, 16 October
Partly cloudy. High 67°, low 44°.
Pressure30.47 inHg
Wind9.4 mph E
Humidity37%
Visibility—
Dew point30°
Sat, 1770° / 44°0
70 °
Myrtle, Saturday, 17 October
Clear. High 70°, low 44°.
Pressure30.24 inHg
Wind5.6 mph NE
Humidity30%
Visibility—
Dew point27°
Sun, 1871° / 46°0
71 °
Myrtle, Sunday, 18 October
Clear. High 71°, low 46°.
Pressure30.06 inHg
Wind10.4 mph W
Humidity25%
Visibility—
Dew point24°
Mon, 1968° / 50°0
68 °
Myrtle, Monday, 19 October
Overcast. High 68°, low 50°.
Pressure30.00 inHg
Wind4.3 mph NE
Humidity36%
Visibility—
Dew point33°
Tue, 2065° / 50°0.02
65 °
Myrtle, Tuesday, 20 October
Light rain. High 65°, low 50°.
Pressure29.88 inHg
Wind12.1 mph W
Humidity43%
Visibility—
Dew point37°
Wed, 2154° / 45°0.08
54 °
Myrtle, Wednesday, 21 October
Light rain. High 54°, low 45°.
Pressure30.03 inHg
Wind10 mph W
Humidity68%
Visibility—
Dew point41°
Thu, 2251° / 46°0.54
51 °
Myrtle, Thursday, 22 October
Rain. High 51°, low 46°.
Pressure30.12 inHg
Wind5 mph E
Humidity89%
Visibility—
Dew point44°
Fri, 2361° / 48°0.11
61 °
Myrtle, Friday, 23 October
Light rain. High 61°, low 48°.
Pressure30.03 inHg
Wind22.5 mph W
Humidity49%
Visibility—
Dew point40°
Sat, 2451° / 44°0.22
51 °
Myrtle, Saturday, 24 October
Rain. High 51°, low 44°.
Pressure30.15 inHg
Wind4.6 mph NE
Humidity66%
Visibility—
Dew point39°
Sun, 2555° / 47°0.36
55 °
Myrtle, Sunday, 25 October
Rain. High 55°, low 47°.
Pressure29.68 inHg
Wind20.9 mph W
Humidity50%
Visibility—
Dew point34°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2657° / 39°0.1
57 °
Myrtle, Monday, 26 October
Climate normal for this date — 60-year average.
Average high57°
Average low39°
Average precipitation0.1 in
Chance of precipitation43%
Record high73° (1986)
Record low22° (2020)
Tue, 2755° / 38°0.08
55 °
Myrtle, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high55°
Average low38°
Average precipitation0.08 in
Chance of precipitation40%
Record high71° (1965)
Record low24° (2020)
Wed, 2855° / 37°0.08
55 °
Myrtle, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high55°
Average low37°
Average precipitation0.08 in
Chance of precipitation45%
Record high69° (1987)
Record low24° (1971)
Thu, 2954° / 37°0.08
54 °
Myrtle, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high54°
Average low37°
Average precipitation0.08 in
Chance of precipitation42%
Record high70° (1983)
Record low19° (2019)
Fri, 3054° / 37°0.07
54 °
Myrtle, Friday, 30 October
Climate normal for this date — 60-year average.
Average high54°
Average low37°
Average precipitation0.07 in
Chance of precipitation35%
Record high71° (2008)
Record low15° (2019)
Sat, 3153° / 37°0.11
53 °
Myrtle, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high53°
Average low37°
Average precipitation0.11 in
Chance of precipitation38%
Record high71° (1988)
Record low20° (2002)
Sun, 0152° / 37°0.11
52 °
Myrtle, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.11 in
Chance of precipitation43%
Record high70° (1988)
Record low20° (2002)
Mon, 0253° / 36°0.07
53 °
Myrtle, Monday, 2 November
Climate normal for this date — 60-year average.
Average high53°
Average low36°
Average precipitation0.07 in
Chance of precipitation37%
Record high66° (1981)
Record low20° (2002)
Tue, 0353° / 35°0.04
53 °
Myrtle, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high53°
Average low35°
Average precipitation0.04 in
Chance of precipitation20%
Record high67° (1975)
Record low19° (1973)
Wed, 0452° / 37°0.12
52 °
Myrtle, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.12 in
Chance of precipitation48%
Record high67° (1975)
Record low22° (1973)
Thu, 0552° / 36°0.1
52 °
Myrtle, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high52°
Average low36°
Average precipitation0.1 in
Chance of precipitation47%
Record high67° (2012)
Record low19° (1971)
Fri, 0651° / 36°0.12
51 °
Myrtle, Friday, 6 November
Climate normal for this date — 60-year average.
Average high51°
Average low36°
Average precipitation0.12 in
Chance of precipitation53%
Record high68° (2012)
Record low15° (1971)
Sat, 0750° / 36°0.13
50 °
Myrtle, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high50°
Average low36°
Average precipitation0.13 in
Chance of precipitation47%
Record high68° (1999)
Record low20° (1973)
Sun, 0850° / 34°0.09
50 °
Myrtle, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high50°
Average low34°
Average precipitation0.09 in
Chance of precipitation45%
Record high66° (2016)
Record low18° (1994)
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 Myrtle, 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 Myrtle, 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.