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Weather data for West Lafayette is updated regularly with the latest available observations and forecasts.

Now · 2:20 PM

West Lafayette Weather & Hourly Forecast

United States · Indiana · 47906

87°F

Mostly sunny

Feels like: 91°F

💧 Humidity 56% 🌡 Pressure 30.06 inHg 💨 Wind 7 mph 👁 Visibility 21.5 mi ☁ Clouds 37% ☀️ UV index 6.9 · High 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for West Lafayette

Today

3:00 PM

Mostly sunny

89° 💧 0.002 in 💨 9 mph H 55%30.06 inHg

6:00 PM

Mostly cloudy

88° 💧 0.064 in 💨 8 mph H 57%30.03 inHg

9:00 PM

Mostly cloudy night

76° 💧 None 💨 6 mph H 90%30.09 inHg

Tomorrow

12:00 AM

Clear night

73° 💧 None 💨 2 mph H 91%30.15 inHg

3:00 AM

Clear night

72° 💧 0.167 in 💨 3 mph H 94%30.15 inHg

6:00 AM

Light rain

70° 💧 0.063 in 💨 1 mph H 97%30.18 inHg

9:00 AM

Mostly cloudy

72° 💧 0.019 in 💨 3 mph H 97%30.24 inHg

12:00 PM

Light thunderstorms

79° 💧 0.025 in 💨 6 mph H 85%30.24 inHg

3:00 PM

Light thunderstorms

82° 💧 0.073 in 💨 4 mph H 79%30.21 inHg

6:00 PM

Mostly sunny

86° 💧 0.029 in 💨 4 mph H 73%30.15 inHg

9:00 PM

Thunderstorms

74° 💧 0.329 in 💨 5 mph H 98%30.21 inHg

Thursday

12:00 AM

Partly cloudy night

73° 💧 None 💨 6 mph H 97%30.21 inHg

3:00 AM

Clear night

73° 💧 None 💨 7 mph H 95%30.18 inHg

6:00 AM

Clear night

74° 💧 None 💨 9 mph H 90%30.15 inHg

9:00 AM

Mostly cloudy

76° 💧 0.002 in 💨 3 mph H 87%30.21 inHg

12:00 PM

Mostly cloudy

82° 💧 None 💨 4 mph H 77%30.21 inHg

Today

3:00 PM

Mostly sunny

89° 💧 None 💨 9 mph H 55%30.06 inHg

4:00 PM

Sunny

90° 💧 0.001 in 💨 8 mph H 54%30.03 inHg

5:00 PM

Mostly sunny

90° 💧 0.000 in 💨 9 mph H 53%30.03 inHg

6:00 PM

Mostly cloudy

88° 💧 0.001 in 💨 8 mph H 57%30.03 inHg

7:00 PM

Light thunderstorms

78° 💧 0.055 in 💨 12 mph H 88%30.09 inHg

8:00 PM

Light rain

76° 💧 0.008 in 💨 8 mph H 91%30.09 inHg

9:00 PM

Mostly cloudy night

76° 💧 None 💨 6 mph H 90%30.09 inHg

10:00 PM

Mostly clear night

75° 💧 None 💨 6 mph H 89%30.12 inHg

11:00 PM

Clear night

74° 💧 None 💨 5 mph H 89%30.12 inHg

Tomorrow

12:00 AM

Clear night

73° 💧 None 💨 2 mph H 91%30.15 inHg

1:00 AM

Clear night

73° 💧 None 💨 3 mph H 92%30.15 inHg

2:00 AM

Clear night

72° 💧 None 💨 3 mph H 94%30.15 inHg

3:00 AM

Clear night

72° 💧 None 💨 3 mph H 94%30.15 inHg

4:00 AM

Light thunderstorms

70° 💧 0.048 in 💨 10 mph H 96%30.18 inHg

5:00 AM

Thunderstorms

70° 💧 0.119 in 💨 2 mph H 97%30.21 inHg

6:00 AM

Light rain

70° 💧 0.060 in 💨 1 mph H 97%30.18 inHg

7:00 AM

Overcast night

70° 💧 0.002 in 💨 5 mph H 98%30.21 inHg

8:00 AM

Mostly cloudy

70° 💧 None 💨 4 mph H 97%30.21 inHg

9:00 AM

Mostly cloudy

72° 💧 None 💨 3 mph H 97%30.24 inHg

10:00 AM

Mostly cloudy

76° 💧 None 💨 4 mph H 92%30.24 inHg

11:00 AM

Light thunderstorms

78° 💧 0.019 in 💨 5 mph H 85%30.24 inHg

12:00 PM

Light thunderstorms

79° 💧 0.021 in 💨 6 mph H 85%30.24 inHg

1:00 PM

Mostly cloudy

83° 💧 0.001 in 💨 8 mph H 73%30.24 inHg

2:00 PM

Light thunderstorms

85° 💧 0.002 in 💨 6 mph H 70%30.24 inHg

3:00 PM

Light thunderstorms

82° 💧 0.066 in 💨 4 mph H 79%30.21 inHg

4:00 PM

Mostly sunny

85° 💧 0.003 in 💨 4 mph H 74%30.18 inHg

5:00 PM

Mostly sunny

86° 💧 0.003 in 💨 5 mph H 72%30.18 inHg

6:00 PM

Mostly sunny

86° 💧 0.003 in 💨 4 mph H 73%30.15 inHg

7:00 PM

Light thunderstorms

83° 💧 0.012 in 💨 5 mph H 82%30.15 inHg

8:00 PM

Light thunderstorms

80° 💧 0.014 in 💨 4 mph H 90%30.15 inHg

9:00 PM

Thunderstorms

74° 💧 0.275 in 💨 5 mph H 98%30.21 inHg

10:00 PM

Light rain

74° 💧 0.051 in 💨 4 mph H 98%30.21 inHg

11:00 PM

Mostly cloudy night

74° 💧 0.002 in 💨 5 mph H 98%30.21 inHg

Thursday

12:00 AM

Partly cloudy night

73° 💧 None 💨 6 mph H 97%30.21 inHg

1:00 AM

Clear night

73° 💧 None 💨 5 mph H 96%30.21 inHg

2:00 AM

Clear night

72° 💧 None 💨 4 mph H 96%30.18 inHg

3:00 AM

Clear night

73° 💧 None 💨 7 mph H 95%30.18 inHg

4:00 AM

Mostly clear night

73° 💧 None 💨 7 mph H 93%30.15 inHg

5:00 AM

Clear night

74° 💧 None 💨 8 mph H 91%30.15 inHg

6:00 AM

Clear night

74° 💧 None 💨 9 mph H 90%30.15 inHg

7:00 AM

Clear night

74° 💧 None 💨 8 mph H 88%30.15 inHg

8:00 AM

Mostly sunny

74° 💧 None 💨 7 mph H 89%30.18 inHg

9:00 AM

Mostly cloudy

76° 💧 None 💨 3 mph H 87%30.21 inHg

10:00 AM

Overcast

78° 💧 0.000 in 💨 1 mph H 83%30.21 inHg

11:00 AM

Mostly cloudy

80° 💧 0.001 in 💨 4 mph H 80%30.21 inHg

12:00 PM

Mostly cloudy

82° 💧 None 💨 4 mph H 77%30.21 inHg

1:00 PM

Mostly cloudy

84° 💧 None 💨 5 mph H 73%30.18 inHg

2:00 PM

Partly cloudy

87° 💧 None 💨 7 mph H 67%30.15 inHg

3:00 PM

Light thunderstorms

87° 💧 0.003 in 💨 6 mph H 65%30.15 inHg

4:00 PM

Light thunderstorms

83° 💧 0.028 in 💨 7 mph H 74%30.12 inHg

5:00 PM

Light thunderstorms

84° 💧 0.021 in 💨 5 mph H 73%30.12 inHg

6:00 PM

Light thunderstorms

80° 💧 0.064 in 💨 5 mph H 84%30.12 inHg

7:00 PM

Thunderstorms

77° 💧 0.105 in 💨 2 mph H 94%30.15 inHg

8:00 PM

Light rain

76° 💧 0.009 in 💨 5 mph H 96%30.15 inHg

9:00 PM

Partly cloudy night

74° 💧 None 💨 7 mph H 95%30.18 inHg

10:00 PM

Mostly cloudy night

73° 💧 None 💨 7 mph H 95%30.18 inHg

11:00 PM

Mostly cloudy night

71° 💧 None 💨 7 mph H 94%30.21 inHg

Friday

12:00 AM

Overcast night

70° 💧 None 💨 6 mph H 94%30.18 inHg

1:00 AM

Overcast night

69° 💧 None 💨 6 mph H 92%30.18 inHg

2:00 AM

Overcast night

69° 💧 None 💨 6 mph H 90%30.18 inHg

3:00 AM

Overcast night

69° 💧 None 💨 6 mph H 90%30.18 inHg

4:00 AM

Overcast night

69° 💧 None 💨 6 mph H 90%30.18 inHg

5:00 AM

Overcast night

68° 💧 None 💨 5 mph H 91%30.18 inHg

6:00 AM

Overcast night

68° 💧 None 💨 5 mph H 92%30.18 inHg

7:00 AM

Overcast night

69° 💧 None 💨 5 mph H 93%30.21 inHg

8:00 AM

Overcast

69° 💧 None 💨 6 mph H 91%30.21 inHg

11:00 AM

Partly cloudy

75° 💧 None 💨 9 mph H 75%30.21 inHg

2:00 PM

Overcast

77° 💧 None 💨 9 mph H 70%30.18 inHg

5:00 PM

Mostly sunny

77° 💧 None 💨 8 mph H 63%30.12 inHg

8:00 PM

Clear night

72° 💧 None 💨 6 mph H 65%30.12 inHg

11:00 PM

Clear night

69° 💧 None 💨 9 mph H 73%30.12 inHg

Saturday

2:00 AM

Clear night

66° 💧 None 💨 9 mph H 78%30.06 inHg

5:00 AM

Mostly cloudy night

65° 💧 None 💨 7 mph H 82%30.03 inHg

8:00 AM

Mostly cloudy

66° 💧 None 💨 8 mph H 85%30.00 inHg

11:00 AM

Mostly sunny

78° 💧 None 💨 10 mph H 73%29.97 inHg

2:00 PM

Partly cloudy

88° 💧 None 💨 11 mph H 57%29.88 inHg

5:00 PM

Partly cloudy

86° 💧 None 💨 7 mph H 62%29.83 inHg

8:00 PM

Moderate rain

74° 💧 None 💨 11 mph H 89%29.85 inHg

11:00 PM

Moderate rain

73° 💧 None 💨 2 mph H 94%29.88 inHg

Sunday

2:00 AM

Overcast night

72° 💧 None 💨 2 mph H 96%29.85 inHg

5:00 AM

Overcast night

70° 💧 None 💨 2 mph H 98%29.85 inHg

8:00 AM

Light rain

70° 💧 None 💨 5 mph H 99%29.91 inHg

11:00 AM

Light rain

71° 💧 None 💨 10 mph H 91%29.94 inHg

2:00 PM

Overcast

74° 💧 None 💨 10 mph H 77%29.94 inHg

5:00 PM

Overcast

73° 💧 None 💨 11 mph H 77%29.91 inHg

8:00 PM

Overcast night

69° 💧 None 💨 11 mph H 78%29.94 inHg

11:00 PM

Overcast night

67° 💧 None 💨 11 mph H 76%30.00 inHg

Monday

2:00 AM

Overcast night

65° 💧 None 💨 10 mph H 77%29.97 inHg

8:00 AM

Sunny

70° 💧 None 💨 4 mph H 98%29.88 inHg

2:00 PM

Partly cloudy

68° 💧 None 💨 3 mph H 99%29.88 inHg

8:00 PM

Partly cloudy night

86° 💧 None 💨 2 mph H 63%29.85 inHg

Tuesday

2:00 AM

Light rain

75° 💧 None 💨 3 mph H 89%29.91 inHg

8:00 AM

Overcast

69° 💧 None 💨 3 mph H 97%29.94 inHg

2:00 PM

Partly cloudy

67° 💧 None 💨 2 mph H 98%29.97 inHg

8:00 PM

Mostly clear night

78° 💧 None 💨 1 mph H 72%29.97 inHg

Wednesday

2:00 AM

Light rain

72° 💧 None 💨 7 mph H 86%29.97 inHg

8:00 AM

Mostly sunny

68° 💧 None 💨 5 mph H 93%30.00 inHg

2:00 PM

Overcast

65° 💧 None 💨 5 mph H 96%30.03 inHg

8:00 PM

Overcast night

73° 💧 None 💨 6 mph H 68%30.06 inHg

Thursday

2:00 AM

Clear night

69° 💧 None 💨 7 mph H 77%30.03 inHg

8:00 AM

Sunny

61° 💧 None 💨 5 mph H 97%30.06 inHg

2:00 PM

Partly cloudy

59° 💧 None 💨 5 mph H 98%30.09 inHg

8:00 PM

Overcast night

71° 💧 None 💨 7 mph H 65%30.06 inHg

Friday

2:00 AM

Mostly clear night

66° 💧 None 💨 4 mph H 77%30.06 inHg

8:00 AM

Sunny

59° 💧 None 💨 3 mph H 95%30.06 inHg

2:00 PM

Overcast

58° 💧 None 💨 2 mph H 100%30.06 inHg

8:00 PM

Light rain

71° 💧 None 💨 1 mph H 68%30.06 inHg

Saturday

2:00 AM

Mostly clear night

67° 💧 None 💨 1 mph H 78%30.00 inHg

8:00 AM

Sunny

61° 💧 None 💨 4 mph H 94%29.97 inHg

2:00 PM

Overcast

62° 💧 None 💨 5 mph H 95%29.97 inHg

8:00 PM

Overcast night

71° 💧 None 💨 5 mph H 69%29.97 inHg

Sunday

2:00 AM

Overcast night

69° 💧 None 💨 8 mph H 69%29.91 inHg

8:00 AM

Partly cloudy

62° 💧 None 💨 6 mph H 93%29.94 inHg

2:00 PM

Mostly cloudy

61° 💧 None 💨 8 mph H 97%30.03 inHg

8:00 PM

Mostly clear night

72° 💧 None 💨 11 mph H 58%30.09 inHg

Monday

2:00 AM

Clear night

65° 💧 None 💨 8 mph H 61%30.09 inHg

8:00 AM

Sunny

59° 💧 None 💨 7 mph H 82%30.15 inHg

2:00 PM

Sunny

54° 💧 None 💨 7 mph H 97%30.21 inHg

8:00 PM

Partly cloudy night

70° 💧 None 💨 8 mph H 54%30.21 inHg

Tuesday

2:00 AM

Clear night

64° 💧 None 💨 7 mph H 65%30.18 inHg

8:00 AM

Partly cloudy

54° 💧 None 💨 10 mph H 81%30.21 inHg

2:00 PM

Partly cloudy

49° 💧 None 💨 6 mph H 92%30.24 inHg

8:00 PM

Mostly cloudy night

68° 💧 None 💨 7 mph H 50%30.21 inHg

Wednesday

2:00 AM

Overcast night

63° 💧 None 💨 6 mph H 67%30.15 inHg

In West Lafayette and, more broadly, across the state of Indiana: As the afternoon progresses into the evening, the weather remains mostly sunny with just a few clouds scattered across the sky. Temperatures will stay warm, ranging from the low 70s to the high 80s. Light southwest winds will blow at around 7 mph, with occasional gusts reaching 15 mph. There is a possibility of some rain, with an expected accumulation of about a quarter inch, especially during the evening hours. Overall, expect mild, warm conditions with a slight chance of rain as the day transitions into night.

15-Day Weather Outlook for West Lafayette

TomorrowTomorrow

Strong thunderstorm 89°/71° 💧 None 💨 8 mph

Thursday, Sep 17Thu Sep 17

Strong thunderstorm 92°/74° 💧 None 💨 9 mph

Friday, Sep 18Fri Sep 18

Overcast 77°/67° 💧 0.643 in 💨 9 mph

Saturday, Sep 19Sat Sep 19

Moderate rain 88°/65° 💧 0.226 in 💨 11 mph

Sunday, Sep 20Sun Sep 20

Light rain 74°/67° 💧 0.370 in 💨 11 mph

Monday, Sep 21Mon Sep 21

Overcast 86°/65° 💧 0.269 in 💨 10 mph

Tuesday, Sep 22Tue Sep 22

Light rain 78°/67° 💧 0.877 in 💨 3 mph

Wednesday, Sep 23Wed Sep 23

Light rain 73°/65° 💧 0.135 in 💨 7 mph

Thursday, Sep 24Thu Sep 24

Overcast 71°/59° 💧 0.016 in 💨 7 mph

Friday, Sep 25Fri Sep 25

Light rain 71°/58° 💧 0.021 in 💨 4 mph

Saturday, Sep 26Sat Sep 26

Overcast 71°/61° 💧 0.028 in 💨 5 mph

Sunday, Sep 27Sun Sep 27

Overcast 72°/61° 💧 0.001 in 💨 11 mph

Monday, Sep 28Mon Sep 28

Partly cloudy 70°/54° 💧 None 💨 8 mph

Tuesday, Sep 29Tue Sep 29

Partly cloudy 68°/49° 💧 None 💨 10 mph

Wednesday, Sep 30Wed Sep 30

Overcast 63°/63° 💧 None 💨 6 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in West Lafayette

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for West Lafayette

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 3:00 PM

PM2.5 Fine particles Good 8,0µg/m³

Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.

PM10 Particulate matter Good 8,5µg/m³

Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.

O₃ Ozone Fair 99,2µg/m³

Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.

NO₂ Nitrogen dioxide Good 1,0µg/m³

A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.

Air quality is acceptable for most people.

UV & HEALTH

UV, Sun & Health Outlook in West Lafayette

Maximum daily UV Today, tomorrow and the following day show the maximum UV index forecast for each day.

0–2 Low 3–5 Moderate 6–7 High 8–10 Very high 11+ Extreme

Today UV 6,9High 🙂Fair

Tomorrow UV 5,3Moderate 😐Moderate

Thursday UV 7,0High 😐Moderate

Friday UV 6,0High 🙂Fair

Saturday UV 6,0High 🙂Fair

Sunday UV 6,0High —Unavailable

Monday UV 6,0High —Unavailable

Hourly UV index today

3:00 PMUV 6,2 4:00 PMUV 4,5 5:00 PMUV 2,7 6:00 PMUV 1,1 7:00 PMUV 0,2

Today's weather health advice Open today's recommendations.

Strong UV exposure

Protect exposed skin with SPF 30+ sunscreen, wear sunglasses, and try to limit direct midday sun.

Acceptable air quality

Air quality is acceptable for most people. Very sensitive people may want to reduce prolonged exertion.

Stay hydrated

Drink water regularly, especially during physical activity or prolonged sun exposure.

Good conditions for outdoor activities

Outdoor activities can generally be enjoyed normally, with sun protection adjusted to the UV level.

WIND OUTLOOK

Hourly Wind Forecast for West Lafayette

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · WEST LAFAYETTE, INDIANA

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 2:00 AM–3:00 AM.

96/100Best-hour score

BEST TIME TONIGHT 2:00 AM–3:00 AM Astronomical darkness: 9:29 PM–5:57 AM

☁ Cloud cover 0% Real hourly forecast for the best viewing hour.

☾ Moonlight 20% Waxing Crescent · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 53° high at the best hour.

✦ Estimated visible meteors 1–4/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min72%

UPCOMING METEOR PERIODSStart, peak and end dates · weather should be checked closer to the peak.

SEP 5–SEP 21

September ε-PerseidsStart SEP 5 · Peak SEP 9 · End SEP 21 · ZHR 8 · 6% Moon at peak

ACTIVE NOW

SEP 20–NOV 20

Southern TauridsStart SEP 20 · Peak NOV 5 · End NOV 20 · ZHR 7 · 20% Moon at peak

UPCOMING

OCT 2–NOV 7

OrionidsStart OCT 2 · Peak OCT 21 · End NOV 7 · ZHR 20 · 77% Moon at peak

UPCOMING

OCT 20–DEC 10

Northern TauridsStart OCT 20 · Peak NOV 12 · End DEC 10 · ZHR 5 · 7% Moon at peak

UPCOMING

Experimental local observing estimate. Weather values come from the hourly forecast already used on this page. Moon position and astronomical darkness are calculated locally from time and coordinates. Meteor-shower ZHR describes ideal conditions and is not the number of meteors a person should expect to see locally.

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Forecast data for West Lafayette were last refreshed today at 2:20 PM. The current forecast period extends through 17/09/2026 at 12:00 PM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.