Monthly outlook for Letha, ID: average high 68.1°, average low 46.9°. That is 2.3° above the climate normal for October. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 3 days and 0.6 inches. The warmest day looks like 18 October (76.5°), the coolest 20 October (40.2°).
68.1°/46.9°
Average high / low
+2.3°
Above normal
0 / 3
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
10 October – 19 October
67.5°
65.2°
+1.3°
20 October – 29 October
69.1°
60.4°
+4.8°
30 October – 8 November
at normal
54.6°
—
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).
Sun, 1158° / 46°0
58 °
Letha, Sunday, 11 October
Overcast. High 58°, low 46°.
Pressure29.71 inHg
Wind10 mph NW
Humidity41%
Visibility6.2 mi
Dew point30°
Mon, 1258° / 44°0
58 °
Letha, Monday, 12 October
Overcast. High 58°, low 44°.
Pressure29.97 inHg
Wind5.9 mph W
Humidity46%
Visibility6.2 mi
Dew point32°
Tue, 1366° / 41°0
66 °
Letha, Tuesday, 13 October
Clear. High 66°, low 41°.
Pressure30.03 inHg
Wind8.6 mph W
Humidity40%
Visibility6.2 mi
Dew point31°
Wed, 1468° / 45°0
68 °
Letha, Wednesday, 14 October
Clear. High 68°, low 45°.
Pressure30.15 inHg
Wind5.9 mph NW
Humidity38%
Visibility—
Dew point31°
Thu, 1571° / 45°0
71 °
Letha, Thursday, 15 October
Clear. High 71°, low 45°.
Pressure30.30 inHg
Wind5.4 mph SE
Humidity33%
Visibility—
Dew point30°
Fri, 1675° / 48°0
75 °
Letha, Friday, 16 October
Clear. High 75°, low 48°.
Pressure30.36 inHg
Wind9.7 mph S
Humidity30%
Visibility—
Dew point32°
Sat, 1774° / 48°0
74 °
Letha, Saturday, 17 October
Overcast. High 74°, low 48°.
Pressure30.15 inHg
Wind7 mph SE
Humidity23%
Visibility—
Dew point25°
Sun, 1876° / 54°0
76 °
Letha, Sunday, 18 October
Mostly clear. High 76°, low 54°.
Pressure30.00 inHg
Wind6.8 mph NW
Humidity21%
Visibility—
Dew point27°
Mon, 1967° / 49°0.01
67 °
Letha, Monday, 19 October
Light rain. High 67°, low 49°.
Pressure29.97 inHg
Wind12.7 mph NW
Humidity35%
Visibility—
Dew point34°
Tue, 2059° / 40°0
59 °
Letha, Tuesday, 20 October
Clear. High 59°, low 40°.
Pressure30.27 inHg
Wind7.1 mph NW
Humidity48%
Visibility—
Dew point32°
Wed, 2166° / 45°0
66 °
Letha, Wednesday, 21 October
Overcast. High 66°, low 45°.
Pressure30.18 inHg
Wind5.9 mph E
Humidity25%
Visibility—
Dew point22°
Thu, 2272° / 43°0
72 °
Letha, Thursday, 22 October
Partly cloudy. High 72°, low 43°.
Pressure30.00 inHg
Wind11.4 mph S
Humidity21%
Visibility—
Dew point20°
Fri, 2371° / 52°0
71 °
Letha, Friday, 23 October
Overcast. High 71°, low 52°.
Pressure29.85 inHg
Wind14.8 mph S
Humidity21%
Visibility—
Dew point26°
Sat, 2474° / 50°0
74 °
Letha, Saturday, 24 October
Overcast. High 74°, low 50°.
Pressure30.12 inHg
Wind4.6 mph NW
Humidity24%
Visibility—
Dew point27°
Sun, 2573° / 50°0
73 °
Letha, Sunday, 25 October
Overcast. High 73°, low 50°.
Pressure30.24 inHg
Wind2.9 mph NE
Humidity27%
Visibility—
Dew point29°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2660° / 40°0.06
60 °
Letha, Monday, 26 October
Climate normal for this date — 60-year average.
Average high60°
Average low40°
Average precipitation0.06 in
Chance of precipitation28%
Record high74° (1986)
Record low23° (2020)
Tue, 2758° / 37°0.03
58 °
Letha, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high58°
Average low37°
Average precipitation0.03 in
Chance of precipitation22%
Record high76° (1990)
Record low20° (1970)
Wed, 2858° / 39°0.06
58 °
Letha, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high58°
Average low39°
Average precipitation0.06 in
Chance of precipitation27%
Record high74° (1968)
Record low21° (1970)
Thu, 2956° / 38°0.04
56 °
Letha, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high56°
Average low38°
Average precipitation0.04 in
Chance of precipitation20%
Record high75° (1968)
Record low19° (1971)
Fri, 3056° / 36°0.03
56 °
Letha, Friday, 30 October
Climate normal for this date — 60-year average.
Average high56°
Average low36°
Average precipitation0.03 in
Chance of precipitation20%
Record high74° (2008)
Record low18° (2019)
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)
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.