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Current weather in Fullerton is few clouds.

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

Now · 1:02 PM

Fullerton Weather & Hourly Forecast

United States · North Dakota · 58441

86°F

Mostly sunny

Feels like: 90°F

💧 Humidity 58% 🌡 Pressure 29.91 inHg 💨 Wind 6 mph 👁 Visibility 28.5 mi ☁ Clouds 23% ☀️ UV index 6.3 · High 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Fullerton

Today

2:00 PM

Sunny

88° 💧 None 💨 7 mph H 54%29.88 inHg

5:00 PM

Strong thunderstorm

89° 💧 0.276 in 💨 8 mph H 49%29.85 inHg

8:00 PM

Light rain

71° 💧 0.086 in 💨 8 mph H 96%29.91 inHg

11:00 PM

Mostly cloudy night

70° 💧 None 💨 7 mph H 95%29.91 inHg

Tomorrow

2:00 AM

Mostly cloudy night

70° 💧 None 💨 9 mph H 93%29.91 inHg

5:00 AM

Clear night

73° 💧 None 💨 12 mph H 93%29.85 inHg

8:00 AM

Partly cloudy

73° 💧 0.001 in 💨 11 mph H 93%29.85 inHg

11:00 AM

Light thunderstorms

76° 💧 0.186 in 💨 18 mph H 82%29.80 inHg

2:00 PM

Thunderstorms

75° 💧 0.208 in 💨 12 mph H 92%29.80 inHg

5:00 PM

Overcast

80° 💧 0.002 in 💨 14 mph H 86%29.68 inHg

8:00 PM

Mostly cloudy

76° 💧 None 💨 17 mph H 85%29.68 inHg

11:00 PM

Mostly clear night

75° 💧 None 💨 15 mph H 85%29.71 inHg

Tuesday

2:00 AM

Overcast night

73° 💧 0.002 in 💨 6 mph H 93%29.77 inHg

5:00 AM

Clear night

69° 💧 None 💨 3 mph H 97%29.77 inHg

8:00 AM

Mostly sunny

69° 💧 None 💨 7 mph H 87%29.83 inHg

11:00 AM

Sunny

75° 💧 None 💨 9 mph H 52%29.85 inHg

Today

2:00 PM

Sunny

88° 💧 None 💨 7 mph H 54%29.88 inHg

3:00 PM

Mostly cloudy

90° 💧 None 💨 8 mph H 51%29.88 inHg

4:00 PM

Overcast

91° 💧 None 💨 8 mph H 48%29.85 inHg

5:00 PM

Strong thunderstorm

89° 💧 0.000 in 💨 8 mph H 49%29.85 inHg

6:00 PM

Light thunderstorms

79° 💧 0.030 in 💨 8 mph H 71%29.88 inHg

7:00 PM

Thunderstorms

71° 💧 0.246 in 💨 4 mph H 94%29.94 inHg

8:00 PM

Light rain

71° 💧 0.075 in 💨 8 mph H 96%29.91 inHg

9:00 PM

Light rain

71° 💧 0.011 in 💨 9 mph H 95%29.91 inHg

10:00 PM

Mostly cloudy night

71° 💧 None 💨 7 mph H 94%29.91 inHg

11:00 PM

Mostly cloudy night

70° 💧 None 💨 7 mph H 95%29.91 inHg

Tomorrow

12:00 AM

Overcast night

70° 💧 None 💨 7 mph H 94%29.91 inHg

1:00 AM

Mostly cloudy night

70° 💧 None 💨 7 mph H 94%29.91 inHg

2:00 AM

Mostly cloudy night

70° 💧 None 💨 9 mph H 93%29.91 inHg

3:00 AM

Clear night

71° 💧 None 💨 12 mph H 93%29.88 inHg

4:00 AM

Clear night

72° 💧 None 💨 13 mph H 92%29.85 inHg

5:00 AM

Clear night

73° 💧 None 💨 12 mph H 93%29.85 inHg

6:00 AM

Clear night

72° 💧 None 💨 10 mph H 94%29.85 inHg

7:00 AM

Mostly clear night

72° 💧 None 💨 10 mph H 94%29.85 inHg

8:00 AM

Partly cloudy

73° 💧 0.000 in 💨 11 mph H 93%29.85 inHg

9:00 AM

Mostly cloudy

76° 💧 None 💨 12 mph H 88%29.83 inHg

10:00 AM

Overcast

77° 💧 0.001 in 💨 19 mph H 81%29.80 inHg

11:00 AM

Light thunderstorms

76° 💧 0.015 in 💨 18 mph H 82%29.80 inHg

12:00 PM

Light thunderstorms

76° 💧 0.050 in 💨 11 mph H 89%29.80 inHg

1:00 PM

Thunderstorms

76° 💧 0.121 in 💨 4 mph H 90%29.83 inHg

2:00 PM

Thunderstorms

75° 💧 0.160 in 💨 12 mph H 92%29.80 inHg

3:00 PM

Light rain

76° 💧 0.014 in 💨 12 mph H 91%29.74 inHg

4:00 PM

Light rain

76° 💧 0.035 in 💨 15 mph H 91%29.71 inHg

5:00 PM

Overcast

80° 💧 0.002 in 💨 14 mph H 86%29.68 inHg

6:00 PM

Partly cloudy

79° 💧 0.000 in 💨 16 mph H 84%29.65 inHg

7:00 PM

Mostly cloudy

79° 💧 None 💨 16 mph H 83%29.65 inHg

8:00 PM

Mostly cloudy

76° 💧 None 💨 17 mph H 85%29.68 inHg

9:00 PM

Partly cloudy night

76° 💧 None 💨 16 mph H 87%29.71 inHg

10:00 PM

Partly cloudy night

76° 💧 None 💨 16 mph H 84%29.71 inHg

11:00 PM

Mostly clear night

75° 💧 None 💨 15 mph H 85%29.71 inHg

Tuesday

12:00 AM

Mostly clear night

74° 💧 None 💨 14 mph H 87%29.74 inHg

1:00 AM

Partly cloudy night

74° 💧 None 💨 11 mph H 89%29.74 inHg

2:00 AM

Overcast night

73° 💧 0.000 in 💨 6 mph H 93%29.77 inHg

3:00 AM

Mostly clear night

73° 💧 0.001 in 💨 5 mph H 93%29.74 inHg

4:00 AM

Clear night

70° 💧 None 💨 3 mph H 96%29.74 inHg

5:00 AM

Clear night

69° 💧 None 💨 3 mph H 97%29.77 inHg

6:00 AM

Clear night

68° 💧 None 💨 3 mph H 97%29.77 inHg

7:00 AM

Mostly clear night

68° 💧 None 💨 6 mph H 93%29.80 inHg

8:00 AM

Mostly sunny

69° 💧 None 💨 7 mph H 87%29.83 inHg

9:00 AM

Mostly sunny

71° 💧 None 💨 7 mph H 79%29.83 inHg

10:00 AM

Sunny

73° 💧 None 💨 7 mph H 65%29.85 inHg

11:00 AM

Sunny

75° 💧 None 💨 9 mph H 52%29.85 inHg

12:00 PM

Sunny

77° 💧 None 💨 8 mph H 46%29.85 inHg

1:00 PM

Sunny

78° 💧 None 💨 11 mph H 40%29.85 inHg

2:00 PM

Sunny

79° 💧 None 💨 12 mph H 37%29.83 inHg

3:00 PM

Sunny

80° 💧 None 💨 14 mph H 35%29.83 inHg

4:00 PM

Sunny

80° 💧 None 💨 15 mph H 34%29.83 inHg

5:00 PM

Sunny

79° 💧 None 💨 14 mph H 37%29.83 inHg

6:00 PM

Sunny

77° 💧 None 💨 13 mph H 40%29.83 inHg

7:00 PM

Sunny

74° 💧 None 💨 12 mph H 44%29.83 inHg

Wednesday

4:00 AM

Clear night

64° 💧 None 💨 15 mph H 64%29.97 inHg

7:00 AM

Clear night

61° 💧 None 💨 16 mph H 73%30.00 inHg

10:00 AM

Partly cloudy

66° 💧 None 💨 16 mph H 62%30.06 inHg

1:00 PM

Mostly sunny

72° 💧 None 💨 17 mph H 43%30.06 inHg

4:00 PM

Partly cloudy

74° 💧 None 💨 15 mph H 38%30.03 inHg

7:00 PM

Sunny

72° 💧 None 💨 11 mph H 40%30.00 inHg

10:00 PM

Clear night

62° 💧 None 💨 5 mph H 61%30.03 inHg

Thursday

1:00 AM

Clear night

59° 💧 None 💨 4 mph H 71%30.03 inHg

4:00 AM

Clear night

57° 💧 None 💨 5 mph H 74%30.00 inHg

7:00 AM

Clear night

58° 💧 None 💨 7 mph H 69%29.97 inHg

10:00 AM

Sunny

68° 💧 None 💨 8 mph H 51%29.94 inHg

1:00 PM

Partly cloudy

81° 💧 None 💨 12 mph H 31%29.85 inHg

4:00 PM

Sunny

85° 💧 None 💨 14 mph H 26%29.77 inHg

7:00 PM

Sunny

82° 💧 None 💨 11 mph H 30%29.71 inHg

10:00 PM

Clear night

75° 💧 None 💨 14 mph H 46%29.68 inHg

Friday

1:00 AM

Clear night

70° 💧 None 💨 13 mph H 57%29.65 inHg

4:00 AM

Mostly cloudy night

65° 💧 None 💨 7 mph H 71%29.65 inHg

7:00 AM

Mostly cloudy night

62° 💧 None 💨 4 mph H 83%29.62 inHg

10:00 AM

Partly cloudy

70° 💧 None 💨 2 mph H 65%29.59 inHg

1:00 PM

Mostly sunny

81° 💧 None 💨 10 mph H 39%29.59 inHg

4:00 PM

Sunny

75° 💧 None 💨 21 mph H 35%29.65 inHg

7:00 PM

Sunny

69° 💧 None 💨 14 mph H 45%29.74 inHg

10:00 PM

Clear night

60° 💧 None 💨 5 mph H 56%29.83 inHg

Saturday

1:00 AM

Mostly clear night

58° 💧 None 💨 6 mph H 63%29.88 inHg

7:00 AM

Partly cloudy night

58° 💧 None 💨 7 mph H 65%29.85 inHg

1:00 PM

Mostly cloudy

52° 💧 None 💨 3 mph H 87%29.91 inHg

7:00 PM

Partly cloudy

67° 💧 None 💨 3 mph H 44%29.91 inHg

Sunday

1:00 AM

Mostly cloudy night

67° 💧 None 💨 9 mph H 45%29.83 inHg

7:00 AM

Light rain

55° 💧 None 💨 13 mph H 82%29.85 inHg

1:00 PM

Moderate rain

52° 💧 None 💨 15 mph H 91%29.83 inHg

7:00 PM

Overcast

57° 💧 None 💨 14 mph H 78%29.88 inHg

Monday

1:00 AM

Overcast night

56° 💧 None 💨 14 mph H 84%29.94 inHg

7:00 AM

Mostly cloudy night

53° 💧 None 💨 11 mph H 86%30.06 inHg

1:00 PM

Sunny

49° 💧 None 💨 9 mph H 95%30.12 inHg

7:00 PM

Partly cloudy

60° 💧 None 💨 14 mph H 56%30.12 inHg

Tuesday

1:00 AM

Clear night

57° 💧 None 💨 10 mph H 62%30.09 inHg

7:00 AM

Clear night

50° 💧 None 💨 8 mph H 81%30.18 inHg

1:00 PM

Sunny

46° 💧 None 💨 5 mph H 92%30.24 inHg

7:00 PM

Mostly cloudy

62° 💧 None 💨 6 mph H 52%30.24 inHg

Wednesday

1:00 AM

Clear night

61° 💧 None 💨 2 mph H 65%30.21 inHg

7:00 AM

Clear night

50° 💧 None 💨 6 mph H 83%30.24 inHg

1:00 PM

Sunny

47° 💧 None 💨 6 mph H 90%30.21 inHg

7:00 PM

Sunny

67° 💧 None 💨 10 mph H 61%30.12 inHg

Thursday

1:00 AM

Mostly cloudy night

70° 💧 None 💨 11 mph H 68%29.94 inHg

7:00 AM

Mostly cloudy night

63° 💧 None 💨 15 mph H 60%29.88 inHg

1:00 PM

Mostly sunny

58° 💧 None 💨 10 mph H 74%29.85 inHg

7:00 PM

Mostly sunny

59° 💧 None 💨 16 mph H 59%30.00 inHg

Friday

1:00 AM

Overcast night

59° 💧 None 💨 8 mph H 55%29.97 inHg

7:00 AM

Overcast night

54° 💧 None 💨 12 mph H 59%30.03 inHg

1:00 PM

Partly cloudy

49° 💧 None 💨 9 mph H 71%30.00 inHg

7:00 PM

Sunny

57° 💧 None 💨 14 mph H 38%30.00 inHg

Saturday

1:00 AM

Partly cloudy night

56° 💧 None 💨 9 mph H 45%29.97 inHg

7:00 AM

Mostly cloudy night

46° 💧 None 💨 6 mph H 65%30.06 inHg

1:00 PM

Partly cloudy

46° 💧 None 💨 8 mph H 69%30.15 inHg

7:00 PM

Mostly sunny

54° 💧 None 💨 15 mph H 42%30.24 inHg

Sunday

1:00 AM

Clear night

54° 💧 None 💨 9 mph H 42%30.24 inHg

7:00 AM

Clear night

40° 💧 None 💨 4 mph H 75%30.39 inHg

1:00 PM

Sunny

36° 💧 None 💨 3 mph H 89%30.42 inHg

7:00 PM

Sunny

56° 💧 None 💨 4 mph H 43%30.39 inHg

Monday

1:00 AM

Clear night

55° 💧 None 💨 7 mph H 50%30.27 inHg

In Fullerton and, more broadly, across the state of North Dakota: The afternoon will feature a mix of sun and clouds, with temperatures warming into the mid to upper 70s and low 80s. Winds from the southeast will be noticeable, reaching up to 20 mph, with gusts up to 35 mph. There is a strong chance of rain later in the day, with total accumulation expected to be around half an inch. Keep an umbrella nearby if you're heading out, especially later in the afternoon and evening. The weather will be quite dynamic, with the possibility of brief heavy showers and gusty winds. Conditions are typical for this time of year, but it’s a good idea to stay alert for changing weather, particularly if you have outdoor plans.

15-Day Weather Outlook for Fullerton

TomorrowTomorrow

Thunderstorms 80°/70° 💧 None 💨 19 mph

Tuesday, Sep 8Tue Sep 8

Mostly cloudy 80°/68° 💧 None 💨 17 mph

Wednesday, Sep 9Wed Sep 9

Partly cloudy 74°/61° 💧 0.280 in 💨 17 mph

Thursday, Sep 10Thu Sep 10

Partly cloudy 85°/57° 💧 None 💨 14 mph

Friday, Sep 11Fri Sep 11

Mostly cloudy 82°/62° 💧 None 💨 21 mph

Saturday, Sep 12Sat Sep 12

Mostly sunny 69°/52° 💧 0.804 in 💨 14 mph

Sunday, Sep 13Sun Sep 13

Moderate rain 67°/52° 💧 0.530 in 💨 15 mph

Monday, Sep 14Mon Sep 14

Overcast 57°/49° 💧 0.318 in 💨 14 mph

Tuesday, Sep 15Tue Sep 15

Partly cloudy 60°/46° 💧 None 💨 14 mph

Wednesday, Sep 16Wed Sep 16

Mostly cloudy 62°/47° 💧 None 💨 6 mph

Thursday, Sep 17Thu Sep 17

Mostly cloudy 70°/58° 💧 0.001 in 💨 15 mph

Friday, Sep 18Fri Sep 18

Overcast 59°/49° 💧 0.008 in 💨 16 mph

Saturday, Sep 19Sat Sep 19

Partly cloudy 57°/46° 💧 0.001 in 💨 14 mph

Sunday, Sep 20Sun Sep 20

Mostly sunny 54°/36° 💧 None 💨 15 mph

Monday, Sep 21Mon Sep 21

Sunny 56°/55° 💧 None 💨 7 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Fullerton

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Fullerton

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 2:00 PM

PM2.5 Fine particles Good 4,5µg/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 4,6µg/m³

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

O₃ Ozone Fair 67,6µg/m³

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

NO₂ Nitrogen dioxide Good 0,4µg/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 Fullerton

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 6,8High 🙂Fair

Tomorrow UV 5,3Moderate 🙂Fair

Tuesday UV 6,1High 🙂Fair

Wednesday UV 5,5Moderate 🙂Fair

Thursday UV 7,0High 🙂Fair

Friday UV 7,0High —Unavailable

Saturday UV 4,0Moderate —Unavailable

Hourly UV index today

2:00 PMUV 6,8 3:00 PMUV 5,8 4:00 PMUV 4,2 5:00 PMUV 2,4 6:00 PMUV 1,0 7:00 PMUV 0,3

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 Fullerton

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · FULLERTON, NORTH DAKOTA

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 3:00 AM–4:00 AM.

92/100Best-hour score

BEST TIME TONIGHT 3:00 AM–4:00 AM Astronomical darkness: 9:48 PM–5:16 AM

☁ Cloud cover 5% Real hourly forecast for the best viewing hour.

☾ Moonlight 21% Waning Crescent · Moon about 4° above the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 60° 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 min69%

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.

DISCOVER WEATHER NEARBY Weather in other cities

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Forecast data for Fullerton were last refreshed today at 1:02 PM. The current forecast period extends through 08/09/2026 at 11:00 AM. 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.