As of 22:26 CDT

Weather in Japan, MO

80°Current weather

Japan, Saturday, 8 August, 22:26

Clear. Feels like 86°. High 89°, low 68°.

Pressure30.00 inHg
Wind6.5 mph SE
Humidity86%
Visibility6.2 mi
Dew point75°

Monthly outlook for Japan, MO: average high 90.7°, average low 69.5°. That is 2.7° above the climate normal for August. Precipitation is expected on 7 days (about 2.0 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 11 August (105.5°), the coolest 21 August (60.3°).

90.7°/69.5°
Average high / low
+2.7°
Above normal
7 / 5
Wet days / normal
2.0 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
8 August – 17 August93°85.8°+4°
18 August – 27 August86.9°85.9°+0.5°
28 August – 6 Septemberat normal83.4°

August records over 66 years

104.4°12 August 2007All-time high
49.8°29 August 1986All-time low

Climate normals and records are computed from the nearest reference point — Sullivan (8 mi).

Sun, 0996° / 71°0Overcast
96 °Overcast

Japan, Sunday, 9 August

Overcast. High 96°, low 71°.

Pressure29.97 inHg
Wind10.8 mph SW
Humidity44%
Visibility6.2 mi
Dew point68°
Mon, 10102° / 75°0Light rain
102 °Light rain

Japan, Monday, 10 August

Light rain. High 102°, low 75°.

Pressure29.94 inHg
Wind14.8 mph SW
Humidity36%
Visibility6.2 mi
Dew point66°
Tue, 11105° / 79°0Partly cloudy
105 °Partly cloudy

Japan, Tuesday, 11 August

Partly cloudy. High 105°, low 79°.

Pressure29.85 inHg
Wind14.8 mph SW
Humidity32%
Visibility6.2 mi
Dew point64°
Wed, 1292° / 73°0.04Light rain
92 °Light rain

Japan, Wednesday, 12 August

Light rain. High 92°, low 73°.

Pressure29.88 inHg
Wind10.1 mph W
Humidity49%
Visibility6.2 mi
Dew point67°
Thu, 1391° / 72°1.17Heavy rain
91 °Heavy rain

Japan, Thursday, 13 August

Heavy rain. High 91°, low 72°.

Pressure29.85 inHg
Wind14.6 mph NE
Humidity48%
Visibility
Dew point65°
Fri, 1479° / 70°0.08Light rain
79 °Light rain

Japan, Friday, 14 August

Light rain. High 79°, low 70°.

Pressure30.00 inHg
Wind17.2 mph E
Humidity80%
Visibility
Dew point71°
Sat, 1594° / 68°0.12Light rain
94 °Light rain

Japan, Saturday, 15 August

Light rain. High 94°, low 68°.

Pressure30.09 inHg
Wind15.9 mph SE
Humidity52%
Visibility
Dew point66°
Sun, 1691° / 70°0.04Light rain
91 °Light rain

Japan, Sunday, 16 August

Light rain. High 91°, low 70°.

Pressure30.06 inHg
Wind10.5 mph NE
Humidity59%
Visibility
Dew point69°
Mon, 1790° / 70°0.09Light rain
90 °Light rain

Japan, Monday, 17 August

Light rain. High 90°, low 70°.

Pressure30.00 inHg
Wind10.4 mph NE
Humidity64%
Visibility
Dew point69°
Tue, 1882° / 70°0.26Rain
82 °Rain

Japan, Tuesday, 18 August

Rain. High 82°, low 70°.

Pressure30.00 inHg
Wind9.6 mph SE
Humidity92%
Visibility
Dew point69°
Wed, 1993° / 68°0Partly cloudy
93 °Partly cloudy

Japan, Wednesday, 19 August

Partly cloudy. High 93°, low 68°.

Pressure29.88 inHg
Wind14.7 mph NE
Humidity49%
Visibility
Dew point66°
Thu, 2082° / 62°0Mostly clear
82 °Mostly clear

Japan, Thursday, 20 August

Mostly clear. High 82°, low 62°.

Pressure30.00 inHg
Wind14 mph NE
Humidity41%
Visibility
Dew point51°
Fri, 2176° / 60°0.18Light rain
76 °Light rain

Japan, Friday, 21 August

Light rain. High 76°, low 60°.

Pressure30.00 inHg
Wind15.2 mph E
Humidity70%
Visibility
Dew point58°
Sat, 2295° / 63°0.04Light rain
95 °Light rain

Japan, Saturday, 22 August

Light rain. High 95°, low 63°.

Pressure29.83 inHg
Wind14 mph SE
Humidity39%
Visibility
Dew point60°
Sun, 2394° / 72°0Light rain
94 °Light rain

Japan, Sunday, 23 August

Light rain. High 94°, low 72°.

Pressure29.94 inHg
Wind8.5 mph SW
Humidity41%
Visibility
Dew point64°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2486° / 67°0.06Climate normal
86 °Climate normal

Japan, Monday, 24 August

Climate normal for this date — 60-year average.

Average high86°
Average low67°
Average precipitation0.06 in
Chance of precipitation23%
Record high98° (2014)
Record low56° (2015)
Tue, 2586° / 67°0.07Climate normal
86 °Climate normal

Japan, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high86°
Average low67°
Average precipitation0.07 in
Chance of precipitation28%
Record high100° (2023)
Record low56° (2025)
Wed, 2686° / 68°0.13Climate normal
86 °Climate normal

Japan, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high86°
Average low68°
Average precipitation0.13 in
Chance of precipitation32%
Record high99° (1983)
Record low53° (2025)
Thu, 2786° / 68°0.13Climate normal
86 °Climate normal

Japan, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high86°
Average low68°
Average precipitation0.13 in
Chance of precipitation27%
Record high98° (1983)
Record low55° (2025)
Fri, 2886° / 67°0.1Climate normal
86 °Climate normal

Japan, Friday, 28 August

Climate normal for this date — 60-year average.

Average high86°
Average low67°
Average precipitation0.1 in
Chance of precipitation28%
Record high99° (2000)
Record low53° (1967)
Sat, 2985° / 67°0.08Climate normal
85 °Climate normal

Japan, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high85°
Average low67°
Average precipitation0.08 in
Chance of precipitation33%
Record high99° (1984)
Record low50° (1986)
Sun, 3084° / 67°0.15Climate normal
84 °Climate normal

Japan, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high84°
Average low67°
Average precipitation0.15 in
Chance of precipitation38%
Record high97° (2013)
Record low52° (1986)
Mon, 3184° / 67°0.11Climate normal
84 °Climate normal

Japan, Monday, 31 August

Climate normal for this date — 60-year average.

Average high84°
Average low67°
Average precipitation0.11 in
Chance of precipitation30%
Record high100° (2013)
Record low54° (2009)
Tue, 0183° / 66°0.09Climate normal
83 °Climate normal

Japan, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high83°
Average low66°
Average precipitation0.09 in
Chance of precipitation33%
Record high98° (2011)
Record low51° (1967)
Wed, 0283° / 66°0.11Climate normal
83 °Climate normal

Japan, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high83°
Average low66°
Average precipitation0.11 in
Chance of precipitation33%
Record high97° (2011)
Record low50° (1974)
Thu, 0383° / 65°0.11Climate normal
83 °Climate normal

Japan, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high83°
Average low65°
Average precipitation0.11 in
Chance of precipitation33%
Record high95° (2011)
Record low48° (1974)
Fri, 0482° / 65°0.11Climate normal
82 °Climate normal

Japan, Friday, 4 September

Climate normal for this date — 60-year average.

Average high82°
Average low65°
Average precipitation0.11 in
Chance of precipitation27%
Record high95° (1999)
Record low47° (1974)
Sat, 0582° / 64°0.05Climate normal
82 °Climate normal

Japan, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high82°
Average low64°
Average precipitation0.05 in
Chance of precipitation20%
Record high97° (1990)
Record low50° (1974)
Sun, 0683° / 64°0.05Climate normal
83 °Climate normal

Japan, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high83°
Average low64°
Average precipitation0.05 in
Chance of precipitation25%
Record high98° (1990)
Record low51° (1988)

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 Japan, MO 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 Japan, MO 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.