Can you see the northern lights in Marysville in June?

On dark, clear nights with enough activity. 30 of 30 nights at Marysville have civil darkness, and 1% of past June days reached Kp 7.

How dark is Marysville in June?

Marysville averages 6.5 hours of civil night a night in June 2027, from 6 h 44 min on the 1st to 6 h 31 min on the last night.

How cloudy is Marysville in June?

NASA POWER's 2001 to 2020 climatology gives Marysville's 1 degree cell 64% mean cloud in June, against 68% for the whole year. It is an all-hours average, not a forecast.

What is the best night in June 2027 for aurora in Marysville?

By darkness and moon alone, Jun 1, with 4 h of moon-free darkness inside 10 PM to 2 AM at Marysville. Activity on that date will only be known hours ahead.

Is June or July better in Marysville?

By civil night times the clear share, June scores 2.3 hours at Marysville and July 3.9. July comes out ahead.

Marysville · June 2027

Northern lights in Marysville in June 2027

Answer

June gives Marysville 6.5 hours of civil night on the 15th, the lightest month of its year, under 64% mean cloud. 1% of June days since 1996 reached Kp 7, enough for the oval edge to reach Marysville.

6.5 h

civil night, average night

SunCalc for 48.05, -122.18; NASA POWER; GFZ Kp

June against the rest of the year

2.4

3.0

2.3

2.5

2.4

2.3

3.9

4.6

4.7

3.6

2.8

2.4

June cloud at Marysville averages 64% in NASA POWER's 2001 to 2020 record, 4 points clearer than its yearly mean. July is Marysville's clearest month at 44%. By civil night times clear sky, June scores 2.3 hours at Marysville, 11th of 12. Seattle, 51 km away, averages 68%, cloudier by 4 points.

Civil night at Marysville starts June at 6 h 44 min and reaches 6 h 31 min by June 30, 0.2 hours shorter. SWPC's 10 PM to 2 AM window is fully dark on every night. True astronomical darkness, the sun 18 degrees down, lasts 0.6 hours on the 15th.

June night by night

June opens toward a new moon on Jun 4, with full moon on Jun 18, in America/Los_Angeles dates. Marysville gets 91 hours of civil night with the moon below the horizon across the month. The best of them for moon-free darkness inside 10 PM to 2 AM: Jun 1 (4 h), Jun 2 (4 h), Jun 3 (4 h).

1
9% lit
5.6 h
2
3% lit
6.1 h
3
1% lit
6.7 h
4
0% lit
6.7 h
New
5
3% lit
5.7 h
6
9% lit
4.9 h
7
17% lit
4.3 h
8
26% lit
3.9 h
9
37% lit
3.5 h
10
48% lit
3.2 h
11
59% lit
3.0 h
12
70% lit
2.6 h
13
79% lit
2.3 h
14
87% lit
1.9 h
15
93% lit
1.4 h
16
97% lit
0.8 h
17
99% lit
0.1 h
18
100% lit
0.0 h
Full
19
98% lit
0.4 h
20
95% lit
0.9 h
21
91% lit
1.3 h
22
84% lit
1.6 h
23
77% lit
1.9 h
24
69% lit
2.2 h
25
59% lit
2.4 h
26
49% lit
2.7 h
27
39% lit
3.0 h
28
29% lit
3.3 h
29
20% lit
3.8 h
30
11% lit
4.4 h

Each cell is the night that starts on that date. Hours are civil-dark time with the moon below the horizon; the green rule scales with them. Green outline: new moon. Bone outline: full moon.

Activity in past Junes

Marysville needs Kp 7 for the average oval edge to sit overhead. 10 of the 900 June days from 1996 to 2025 (1%) reached it in the GFZ Potsdam record, 7th of 12 months; storm days with Kp 5 or more made up 8%. Marysville sits at 53.5 degrees geomagnetic. The lowest NOAA storm level whose typical viewing latitude reaches it is G3 (Kp = 7). By SWPC's rule the average oval edge is overhead only at Kp 7.

June across United States

Marysville ranks 6th in United States for civil night on June 15, behind Buffalo at 7.4 hours. Coming from May (7.4 hours at Marysville), June loses darkness, and the nights keep growing into July (6.9 hours on the 15th). The June solstice falls on June 21, 07:07 Marysville time.

Civil night on June 15 and June cloud, month-page towns in United States
Town	Civil night	Cloud
Buffalo	7.4 h	61%
Portland, Maine	7.3 h	62%
Minneapolis	7.0 h	58%
Duluth	6.7 h	61%
Fargo	6.7 h	57%
Marysville	6.5 h	64%
Seattle	6.5 h	68%
Juneau	2.8 h	81%
Anchorage	0.0 h	81%
Fairbanks	0.0 h	73%
Eagle River	0.0 h	81%

Darkness and moon, every night

Marysville, June 2027: each night from local noon to the next noon
Night	Civil	Astronomical	Moon-free dark	Moon-free, 10 PM to 2 AM	Moon lit
Tue Jun 1	6 h 44 min	2 h	5 h 34 min	4 h	9%
Wed Jun 2	6 h 42 min	1 h 54 min	6 h 5 min	4 h	3%
Thu Jun 3	6 h 41 min	1 h 48 min	6 h 41 min	4 h	1%
Fri Jun 4	6 h 39 min	1 h 42 min	6 h 39 min	4 h	0%
Sat Jun 5	6 h 37 min	1 h 36 min	5 h 42 min	3 h 16 min	3%
Sun Jun 6	6 h 36 min	1 h 30 min	4 h 55 min	2 h 30 min	9%
Mon Jun 7	6 h 35 min	1 h 24 min	4 h 21 min	1 h 56 min	17%
Tue Jun 8	6 h 33 min	1 h 18 min	3 h 54 min	1 h 30 min	26%
Wed Jun 9	6 h 32 min	1 h 12 min	3 h 33 min	1 h 9 min	37%
Thu Jun 10	6 h 31 min	1 h 6 min	3 h 14 min	51 min	48%
Fri Jun 11	6 h 30 min	1 h	2 h 57 min	33 min	59%
Sat Jun 12	6 h 29 min	54 min	2 h 39 min	16 min	70%
Sun Jun 13	6 h 28 min	48 min	2 h 19 min	0 min	79%
Mon Jun 14	6 h 28 min	43 min	1 h 56 min	0 min	87%
Tue Jun 15	6 h 27 min	37 min	1 h 27 min	0 min	93%
Wed Jun 16	6 h 27 min	32 min	50 min	0 min	97%
Thu Jun 17	6 h 26 min	26 min	4 min	0 min	99%
Fri Jun 18	6 h 26 min	22 min	0 min	0 min	100%
Sat Jun 19	6 h 26 min	19 min	23 min	20 min	98%
Sun Jun 20	6 h 26 min	17 min	54 min	52 min	95%
Mon Jun 21	6 h 26 min	18 min	1 h 19 min	1 h 17 min	91%
Tue Jun 22	6 h 26 min	20 min	1 h 39 min	1 h 37 min	84%
Wed Jun 23	6 h 26 min	24 min	1 h 55 min	1 h 54 min	77%
Thu Jun 24	6 h 26 min	29 min	2 h 11 min	2 h 9 min	69%
Fri Jun 25	6 h 27 min	34 min	2 h 26 min	2 h 24 min	59%
Sat Jun 26	6 h 27 min	40 min	2 h 41 min	2 h 39 min	49%
Sun Jun 27	6 h 28 min	46 min	2 h 59 min	2 h 57 min	39%
Mon Jun 28	6 h 29 min	51 min	3 h 20 min	3 h 18 min	29%
Tue Jun 29	6 h 30 min	57 min	3 h 47 min	3 h 45 min	20%
Wed Jun 30	6 h 31 min	1 h 3 min	4 h 25 min	4 h	11%

Moon lit: SunCalc illuminated fraction at the middle of the 10 PM to 2 AM window.

Questions

Can you see the northern lights in Marysville in June?: On dark, clear nights with enough activity. 30 of 30 nights at Marysville have civil darkness, and 1% of past June days reached Kp 7.
How dark is Marysville in June?: Marysville averages 6.5 hours of civil night a night in June 2027, from 6 h 44 min on the 1st to 6 h 31 min on the last night.
How cloudy is Marysville in June?: NASA POWER's 2001 to 2020 climatology gives Marysville's 1 degree cell 64% mean cloud in June, against 68% for the whole year. It is an all-hours average, not a forecast.
What is the best night in June 2027 for aurora in Marysville?: By darkness and moon alone, Jun 1, with 4 h of moon-free darkness inside 10 PM to 2 AM at Marysville. Activity on that date will only be known hours ahead.
Is June or July better in Marysville?: By civil night times the clear share, June scores 2.3 hours at Marysville and July 3.9. July comes out ahead.

Sources and verification

SunCalchttps://github.com/mourner/suncalc
NASA POWER climatologyhttps://power.larc.nasa.gov/docs/services/api/temporal/climatology/
GFZ Potsdam Kp indexhttps://kp.gfz.de/en/data
NOAA SWPC, Tips on viewing the aurorahttps://www.spaceweather.gov/content/tips-viewing-aurora

Quoted figures last checked against their sources on 2026-09-30; next review 2026-12-31. Computed figures come from SunCalc and the IGRF-14 dipole as described in the methodology. Every quote is listed in the sources ledger.