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Old 05-01-2021, 09:33 PM
 
Location: Live:Downtown Phoenix, AZ/Work:Greater Los Angeles, CA
25,893 posts, read 10,284,603 times
Reputation: 8566

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Phoenix, AZ April 2021 Summary

Highest Temp 98°F
Lowest Temp 57°F
Minimum High 75°F
Maximum Low 71°F

Avg High 90°F Dep +4.3°F
Avg Low 63.3°F Dep +2.8°F

Mean Temp 76.7°F Dep +3.6°F

Total Precip 0.01 "
Departure -0.22 "

Records=4

I. 2nd Record Max Low
69°F Dep +12°F
II. 3rd Record High (Tie 1943)
97°F Dep +15°F
III. 4th Record High (Tie 1961)
98°F Dep +16°F
IV. 6th Record Max Low
71°F Dep +13°F

Five Warmest Days

I. 4th 82.5°F (98°F/67°F)
II. 30th 82.5°F (97°F/68°F)
III. 3rd 81.5°F (97°F/66°F)
IV. 2nd 81.5°F (94°F/69°F)
V. 6th 81°F (91°F/71°F)

Five Coolest Days

I. 27th 67°F (75°F/59°F)
II. 28th 69°F (81°F/57°F)
III. 18th 71.5°F (83°F/60°F)
IV. 16th 71.5°F (84°F/59°F)
V. 26th 72.5°F (80°F/65°F)

5th warmest April on record!

Riverside, CA April 2021 Summary

Highest Temp 98°F
Lowest Temp 45°F
Minimum High 64°F
Maximum Low 58°F

Avg High 78.2°F Dep +1.9°F
Avg Low 51.1°F Dep +1.3°F

Mean Temp 64.7°F Dep +1.6°F

Total Precip 0.00 "
Departure -0.77 "

Records=2

I. 29th Record High (Tie 1981&2008)
98°F Dep +19°F
II. 30th Record High (Tie 1996)
98°F Dep +19°F

Five Warmest Days

I. 30th 78°F (98°F/58°F)
II. 29th 75°F (98°F/52°F)
III. 1st 72°F (87°F/57°F)
IV. 19th 70°F (90°F/50°F)
V. 7th 68°F (84°F/52°F)

Five Coolest Days

Itie. 14th 58.5°F (67°F/50°F)
Itie. 26th 58.5°F (67°F/50°F)
III. 15th 58.5°F (72°F/45°F)
IV. 22nd 59°F (64°F/54°F)
V. 27th 59.5°F (69°F/50°F)
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Old 05-02-2021, 04:21 AM
 
Location: Trondheim, Norway - 63 N
3,418 posts, read 2,146,374 times
Reputation: 1730
April was the third month this year with below average temperature. This will not be a warm year, even if summer turns warm, because winter was cold. March was above average, as the only month so far this year. Average is 1991-2020.

Trondheim AP (12 m, Værnes):
Avg high: 7.6°C / 46°F
Avg low: -0.3°C / 31°F
Mean: 3.5°C (-1.6°C)
Abs high: 18.4°C / 65°F
Abs low: -3.7°C / 25°F
Precipitation: 63.4 mm (151 %)
Sunhours: 171 (83 % of avg last 5 years)

The south of Norway had a dry and sunny April with temps slightly below avg.
Oslo (94 m, Blindern):
Avg high: 11°C / 52°F
Avg low: 0.8°C / 33°F
Mean: 5.7°C (-0.5°C)
Abs high: 18.2°C / 65°F
Abs low: -3.5°C / 26°F
Precipitation: 13.7 mm (28 %)
Sunhours: 284 (above avg)

Sunniest was Kristiansand on the south coast, with as much as 323 sunhours in April - new national record high for April! The previous record was 308 sunhours recorded in Trondheim in April 2019.
Bergen had 216 sunhours in April.

Very wet April in the far north of Norway, with a lot of it in the form of snow:
Tromsø (20 m, Holt):
Avg high: 4.1°C
Avg low: -0.8°C
Mean: 1.3°C (-0.4°C)
Abs high: 12.4°C
Abs low: -6.8°C
Precipitation: 149.4 mm (243 %!)
Sunhours: 124 (below avg)
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Old 05-02-2021, 04:52 AM
 
19,613 posts, read 12,800,160 times
Reputation: 6662
Apr was a rain save for my area. No rain in Jan and March and BOOM near 3" for Apr. Temps were cooler as well vs last Apr. Every month was below normal on rain last year but Apr had 5" and Nov had around 3" thanks to a TS. So 4 Apr's in a row with above normal rain and Apr is about the driest month of the year on avg.
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Old 05-02-2021, 07:00 AM
 
Location: Syrmia, Northern Serbia, near 45 N
5,966 posts, read 1,814,541 times
Reputation: 1305
April 2021 here was colder than average.

Mean temperature in my town in this April was 8.9c (mean for 1981-2010 period is 11.9c / and for 1991-2020 is 12.5c)

Average min: 3.4c / Average max: 14.4c

Coldest low: -3c (on April 9)

Coldest high: 5c (on April 14)

Warmest low: 11c (on April 30)

Warmest high: 25c (on April 30)

Number of days with frost: 7


It snowed on April 7 in the morning. 5-6 cm of snow fell, but melted after a few hours. It was first snow cover in April in my region since 1997.
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Old 05-02-2021, 07:21 AM
Status: "239." (set 23 hours ago)
 
Location: Sheffield, England
3,259 posts, read 811,887 times
Reputation: 1858
Coldest average minimum temperature, since 100 years ago, very dry, probably sunnier than average. Overall a poor month IMO just for being far too cold.


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Old 05-02-2021, 07:57 AM
 
Location: Northern Virginia
3,257 posts, read 1,297,703 times
Reputation: 8001
April summary for DCA/Reagan National:


Highest Tmax: 88F
Average Tmax: 68.7F
Lowest Tmax: 47F


Highest Tmin: 67F
Average Tmin: 47.6F
Lowest Tmin: 31F


Monthly average: 58.2F - +1.4 vs old 30 year average



A slightly above average month (though probably average at best vs the new 30 year average). The warm to hot period at the end of the month really pushed it even there because otherwise it was mostly decidedly mediocre weather.
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Old 05-02-2021, 09:33 AM
 
Location: SE UK
9,561 posts, read 8,192,630 times
Reputation: 6745
I'm afraid I don't have the exact details but what I can say is that it's been cold, damn cold! I don't know if it's official but I heard somewhere that here it's been the coldest April since records began? Temperatures have been around 10-11 degrees for most of it and the night time lows around freezing!! We have had a wind straight from the Arctic for weeks now!
I think I prefer Global Warming! :-/
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Old 05-02-2021, 01:39 PM
 
901 posts, read 1,714,243 times
Reputation: 960
Numbers from Hyslop Field north of Corvallis, OR.

Ave Max 66.6 (19.2); 6 (3.3) above most recent 30 year mean.
Ave min 36.5 (2.5); 3.4 (1.9) below most recent 30 year mean
Rainfall amounted to a scant 0.5 inches (12.7 mm) some 2.6 (66 mm) below the 30 year average.

An exceeding dry month. We haven't had one as dry since 1939 and only two others in the 130 year history of this site that were drier. This, on the heels of a March with only about 50% of standard rainfall for the month makes for a very dry beginning of spring.
The signature feature of this month and which may be guessed at by the astoundingly large spread between daytime and nighttime temperatures, was the number of sunny days and cloudless nights. We don't track sunshine hours here, but my calibrated eye tells me we had about 85% possible sunshine and we don't always get that much in high summer. It was a gorgeous month.
I made a prediction that April would be cloudy, cool and rainy. I blew it on all three counts so I won't make any predictions for May but if we get one as "gorgeous" as April was, we could be looking forward to a wildfire season even worse than last year's (if that's even possible).
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Old 05-02-2021, 03:40 PM
Status: "My advice is worth every penny you paid for it" (set 10 days ago)
 
Location: Sierra Vista, AZ
17,183 posts, read 22,360,846 times
Reputation: 9403
I am in southern ARIZONA on the border. My heat is still on. 50s even 40s at night, cold and windy.
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Old 05-02-2021, 06:14 PM
 
Location: Toronto
219 posts, read 70,349 times
Reputation: 155
Warm in the first half, below seasonal in the second half...

Toronto Pearson Airport April 2021 Summary

Highest Temp 20.6°C (8th)
Lowest Temp -5.1°C (3rd)
Minimum High 2.6°C (1st)
Maximum Low 11.6°C (9th)

Avg High 12.7°C Dep +0.5°C
Avg Low 3.1°C Dep +1.2°C

Mean Temp 7.9°C Dep +0.8°C

Total Precip 55.8 mm
Departure -12.7 mm

Total Snow 4.4 cm
Departure -0.1 cm

Five Warmest Days by Daytime High

I. 8th 20.6°C
II. 10th 20.4°C
III. 9th 19.5°C
IV. 23rd 19.4°C
V. 7th 17.4°C

Five Coolest Days by Minimal Daytime High

I. 1st 2.6°C
II. 21st 4.6°C
III. 2nd 4.7°C
IV. 20th 4.9°C
V. 22nd 5.4°C

Notable Precipitation Events:
11th-12th: 19.6mm rain
20th-21st: 4.2cm snow
28th-29th: 20.4mm rain
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