Monthly outlook for Letha, ID: average high 60.5°, average low 44°. That is 0.6° below the climate normal for October. Precipitation is expected on 6 days (about 1.6 inches), against a normal of 3 days and 0.6 inches. The warmest day looks like 16 October (77.7°), the coolest 30 October (37°).
60.5°/44°
Average high / low
−0.6°
Below normal
6 / 3
Wet days / normal
1.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
15 October – 24 October
67.9°
63.4°
+2.5°
25 October – 3 November
48.1°
57°
-5°
4 November – 13 November
at normal
52.5°
—
October records over 66 years
92.8°1 October 1997All-time high
17.6°30 October 2019All-time low
Climate normals and records are computed from the nearest reference point — Emmett (8 mi).
Fri, 1678° / 45°0
78 °
Letha, Friday, 16 October
Clear. High 78°, low 45°.
Pressure30.47 inHg
Wind4.9 mph SE
Humidity35%
Visibility6.2 mi
Dew point34°
Sat, 1775° / 48°0
75 °
Letha, Saturday, 17 October
Overcast. High 75°, low 48°.
Pressure30.18 inHg
Wind4.2 mph S
Humidity30%
Visibility6.2 mi
Dew point33°
Sun, 1872° / 47°0
72 °
Letha, Sunday, 18 October
Clear. High 72°, low 47°.
Pressure30.03 inHg
Wind3.2 mph S
Humidity38%
Visibility6.2 mi
Dew point37°
Mon, 1977° / 52°0
77 °
Letha, Monday, 19 October
Clear. High 77°, low 52°.
Pressure29.85 inHg
Wind5.1 mph S
Humidity33%
Visibility6.2 mi
Dew point37°
Tue, 2072° / 51°0
72 °
Letha, Tuesday, 20 October
Overcast. High 72°, low 51°.
Pressure29.91 inHg
Wind6.1 mph NW
Humidity37%
Visibility—
Dew point37°
Wed, 2161° / 51°0.39
61 °
Letha, Wednesday, 21 October
Rain. High 61°, low 51°.
Pressure29.77 inHg
Wind7.2 mph S
Humidity76%
Visibility—
Dew point49°
Thu, 2262° / 51°0.23
62 °
Letha, Thursday, 22 October
Rain. High 62°, low 51°.
Pressure30.00 inHg
Wind6.8 mph W
Humidity56%
Visibility—
Dew point42°
Fri, 2356° / 44°0
56 °
Letha, Friday, 23 October
Mostly clear. High 56°, low 44°.
Pressure30.27 inHg
Wind12.1 mph NW
Humidity43%
Visibility—
Dew point30°
Sat, 2457° / 40°0
57 °
Letha, Saturday, 24 October
Overcast. High 57°, low 40°.
Pressure30.15 inHg
Wind7.1 mph SE
Humidity33%
Visibility—
Dew point22°
Sun, 2548° / 42°0.26
48 °
Letha, Sunday, 25 October
Rain. High 48°, low 42°.
Pressure29.88 inHg
Wind11.5 mph NW
Humidity81%
Visibility—
Dew point38°
Mon, 2646° / 40°0.19
46 °
Letha, Monday, 26 October
Light rain. High 46°, low 40°.
Pressure29.80 inHg
Wind8.4 mph W
Humidity75%
Visibility—
Dew point36°
Tue, 2743° / 37°0.33
43 °
Letha, Tuesday, 27 October
Rain. High 43°, low 37°.
Pressure29.94 inHg
Wind9.2 mph W
Humidity98%
Visibility—
Dew point37°
Wed, 2851° / 40°0.19
51 °
Letha, Wednesday, 28 October
Light rain. High 51°, low 40°.
Pressure29.94 inHg
Wind12.6 mph SE
Humidity64%
Visibility—
Dew point37°
Thu, 2949° / 38°0.04
49 °
Letha, Thursday, 29 October
Light rain. High 49°, low 38°.
Pressure30.06 inHg
Wind10.1 mph W
Humidity51%
Visibility—
Dew point27°
Fri, 3051° / 37°0
51 °
Letha, Friday, 30 October
Partly cloudy. High 51°, low 37°.
Pressure30.27 inHg
Wind12.5 mph SE
Humidity53%
Visibility—
Dew point30°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 3156° / 37°0.04
56 °
Letha, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high56°
Average low37°
Average precipitation0.04 in
Chance of precipitation23%
Record high75° (1988)
Record low22° (2002)
Sun, 0156° / 37°0.04
56 °
Letha, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high56°
Average low37°
Average precipitation0.04 in
Chance of precipitation22%
Record high73° (1988)
Record low22° (2002)
Mon, 0255° / 36°0.06
55 °
Letha, Monday, 2 November
Climate normal for this date — 60-year average.
Average high55°
Average low36°
Average precipitation0.06 in
Chance of precipitation25%
Record high67° (1965)
Record low19° (1971)
Tue, 0355° / 35°0.03
55 °
Letha, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high55°
Average low35°
Average precipitation0.03 in
Chance of precipitation15%
Record high70° (1983)
Record low23° (2002)
Wed, 0455° / 37°0.05
55 °
Letha, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high55°
Average low37°
Average precipitation0.05 in
Chance of precipitation28%
Record high69° (1975)
Record low25° (2002)
Thu, 0554° / 36°0.05
54 °
Letha, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high54°
Average low36°
Average precipitation0.05 in
Chance of precipitation28%
Record high73° (2020)
Record low20° (1971)
Fri, 0655° / 37°0.05
55 °
Letha, Friday, 6 November
Climate normal for this date — 60-year average.
Average high55°
Average low37°
Average precipitation0.05 in
Chance of precipitation30%
Record high73° (1999)
Record low18° (1971)
Sat, 0753° / 37°0.06
53 °
Letha, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high53°
Average low37°
Average precipitation0.06 in
Chance of precipitation37%
Record high74° (1999)
Record low23° (1971)
Sun, 0852° / 34°0.06
52 °
Letha, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high52°
Average low34°
Average precipitation0.06 in
Chance of precipitation37%
Record high68° (2016)
Record low22° (1994)
Mon, 0952° / 34°0.07
52 °
Letha, Monday, 9 November
Climate normal for this date — 60-year average.
Average high52°
Average low34°
Average precipitation0.07 in
Chance of precipitation32%
Record high65° (2016)
Record low26° (1993)
Tue, 1051° / 34°0.06
51 °
Letha, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high51°
Average low34°
Average precipitation0.06 in
Chance of precipitation27%
Record high65° (2016)
Record low19° (1986)
Wed, 1151° / 34°0.05
51 °
Letha, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high51°
Average low34°
Average precipitation0.05 in
Chance of precipitation27%
Record high70° (1999)
Record low18° (1985)
Thu, 1251° / 34°0.05
51 °
Letha, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high51°
Average low34°
Average precipitation0.05 in
Chance of precipitation32%
Record high72° (1999)
Record low14° (1985)
Fri, 1351° / 35°0.06
51 °
Letha, Friday, 13 November
Climate normal for this date — 60-year average.
Average high51°
Average low35°
Average precipitation0.06 in
Chance of precipitation33%
Record high69° (1999)
Record low19° (1985)
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 Letha, 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 Letha, 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.